After reading The $21 Challenge, I thought I would see which other areas of my life I could apply the Challenge to.

First, I opened a separate bank account and now deposit $21 every week before I do anything else with my money. I see this as a type of retirement fund – it will be nice to see the funds in 30 years time!

My next $21 Challenge is to only put $21 worth of petrol in my car each week. I will park my car further away from where I need to go; this will save money and improve my fitness and wellbeing.

When my phone contract ends soon, I am going to challenge myself to spend no more than $21 on pre-paid phone credit each month - now that will be a challenge!

There are so many ways we can implement the $21 Challenge in our lives, thanks to Fiona and Jackie's inspirational book.

I save over $300 every time I clean my rugs with this ingenious tip! About 12 months ago I bought three large rugs at a garage sale. They were marked, but mainly from day to day use. I figured even if I had to pay for them to be cleaned, it would still work out much cheaper than buying them new. Was I in for a shock when I rung around to get prices! To get just ONE of my average room sized carpets cleaned it was going to cost me around $100. Apparently they are harder to clean than a regular carpet, hence the hefty price. I was very disappointed and felt like I had just wasted the $110 I had spent on my 'bargain' rugs. I thought surely there had to be a better way - and there was! I rolled up one of the rugs and went down to the local do-it-yourself car wash. I hosed the dirt off the ground and then laid the rug down. Using the pressure spray on the soap cycle, I sprayed the rug, then used the rinse cycle to clean it all off! It was so easy; the high pressure made very light work of all the marks and left no soap behind. Best of all, it cost me less then $10 - a saving of $270 for all three rugs! The rugs dried in a day in the sun and they came up like new. My friends have all started doing this too and one of them swears that her rugs come up better then they did when she was paying to have them done professionally. It gets rid of all smells and marks right down to the backing. I wash my rugs every couple of months as I have three dogs and two young kids and this has saved me a whopping $1620 to date!

If your baby or toddler enjoys Heinz fruit gels, you can easily make your own at home. The benefit is that you know exactly what you are feeding them and it costs you a lot less! You will need:

2 cups of fruit juice (apple, blackcurrant or whatever you choose)
1/2 teaspoon Agar powder (you can buy this from health food shops; don't be put off by the cost as it will last a long time). You need to measure the ingredients exactly to get the right consistency, otherwise the gel will be either too firm or too runny.

Put the juice in a saucepan and bring to the boil. Then sprinkle the Agar over the top and let simmer for about 30 seconds. Pour into jars or containers and let set in the fridge. This should make around eight serves depending on the size of the containers. Unlike gelatin, Agar will stay firm if the gel is taken out of the fridge. You can also mix pureed fruit like apple, and it won't affect the recipe. For toddlers or older children you can mix two fruits and it is just like the jelly fruit cups you buy in the supermarket.

I am 22 years old and on a low income, but am well on the way to saving for my first house! I developed a simple system that keeps my savings goal at the forefront of my mind and encourages the support of those around me.

I've always found it hard to save, but one day I got a big piece of cardboard and wrote 'My House Deposit' at the top. On the right hand side I cut out images of a house, a kitchen and a loungeroom that I would love to own one day. On the left hand side I drew a giant thermometer and on the side wrote the figures $0 to $40 000 ascending, just like on a real thermometer. Whether or not I need $40 000 is irrelevant; I look at this table every day and whenever I save another $500, I colour in with a red crayon up to the amount on the tally. I use hints from Simple Savings, such as making my own lunch every day and not buying clothes if I don't need them and now whenever I make a purchase I think of my house deposit and how much I want it far more than a coffee or new shoes!

An unexpected bonus of having this chart is that I've found my family and boyfriend have become aware of my goals and I get lots of support along the way. This visualisation technique really does wonders, and most importantly you are making a concrete agreement with yourself and you stop losing sight of your goals. I'm already a quarter of the way to reaching mine!

At 12 years old, my daughter is already helping our family save money on snacks using her Simple Savings skills! With five children in the house, we do a big shop just once a month and are careful to make our food and treats last until the next shop. Recently we were nearing the end of the month and getting low on food. I arrived home one day to find my daughter baking biscuits. 'They're Doos!' she told me. 'You always said if there was nothing in the cupboard, we had to make do, so I made Doos!'

The name has stuck in our house and now whenever we have 'nothing' in the house for lunch boxes, snacks or afternoon tea, she just makes a batch of 'Doos' using whatever she can find in the pantry to 'make do' with. She is proving to be very inventive with her recipes and is turning out to be a real baker. She'll turn out simple but delicious treats such as honey joys, choc chip biscuits, Anzac biscuits, pikelets and pancakes in no time at all! She really has shown that you can make something from almost anything in the pantry and would be wonderful at the $21 Challenge! Here is the recipe for her latest creation, called 'Sort of Scones!'

1 cup oats
1 cup self raising flour
1/2 cup sugar
125g butter
1 egg
1/4 cup milk

Mix all ingredients together, then roll into balls and place on a greased baking tray. Bake in a moderate oven (around 180C) for 10 minutes.

I couldn't be prouder of my daughter's efforts to help us save money and keep everyone well fed. Whenever we think our parenting has a lot to be desired, it's moments like this which prove we have to be doing something right - good things do rub off too!

While searching through the craft section in the Vault, I came across a contribution titled 'Loving keepsakes from recycled clothing'. This inspired me to write in and tell you what I did with my late husband's shirts.
 
He had a lot of flannelette check shirts, which he loved to wear in winter. I cut up the shirts into even squares, leaving the pockets on some squares - I replaced the pocket buttons with gold ones from my button tin. I then sewed the squares together and detailed them by sewing some bright blue ribbon down and across each section. After that, I backed the lot with a flannelette sheet – the end result was a lovely shirt rug!
 
I gave this rug as a keepsake to my seriously disabled grandson, who just loved his Grandpa to bits. My grandson could keep his treasures in the pockets I had left on the squares, as they had a flap that could be buttoned up.
 
Even though Grandpa's Shirt Rug is nearly worn out, my family will always think of it as a special keepsake. I thought you might like to read about my efforts; I just love making something new and useful from something old.

I moved to Perth a couple of years ago with very few possessions, two young children and a dog. I stayed with friends for a couple of weeks and really liked the area they lived in.

I set my rent limit to $150 (cheap for city living - but necessary for the budget) and put my name down on the huge waiting list for government housing. I looked at many places - most out of financial reach. The ones I could afford looked (and smelled) bad. I decided I could 'change' the appearance and the smells - but not the budget.

So, I rented the 'worst house in the best street'. I went through a real estate agent and asked if I could meet with the owner. When he came around (which most don't do regularly with managed properties), he was the first to admit the place needed work (mostly cosmetic).

I suggested to him that I would spruce the place up a bit and in return my rent would not go up while I lived there, plus we agreed that I would be entitled to two weeks rent free over Christmas!

I have painted the entire inside of the house for about $200 (including feature walls, and old laminated cupboards) by buying mis-tinted paints and laybying paint specials. I ripped up the old carpets and polished the floor boards (about $150 in equipment hire and food for my 'helpers') I also got second hand carpet for free from the local paper and replaced the old stuff in the kids bedrooms. I got curtains and blinds from the op-shop and sale tables (about $50 in total)

As for the outside - my place looks better than most of the privately owned homes now! A few boxes of lawn seed (about $3.00 from supermarkets), a bit of hand watering and weed pulling and I have a great front lawn.

I built flower beds with bulk seedlings ($0.45c per punnet from the local nursery - discontinued or 'sick' stock). People in the street are always telling me how great the house looks and they can't believe its the same place!

I work and go to university, as well as look after my children - so all this has been achieved over the last two years. My landlord is happy, we are happy and the money I save weekly in rent (between $50 - $60 per week) allows us to go on holidays once a year and have a few extras!

Watching my 'non-Simple Savings' sister unpack her groceries this week made me realise how much my shopping habits have changed in the year since I discovered Simple Savings. I used to love supermarket shopping, wandering the aisles for hours, one of this, one of that.

Some products I just don't buy anymore include:

• Liquid handsoap - I now make my own (my first SS project from the Vault). Saves $40/year.

• Spray and cooking oil - I buy 4L of good olive oil on special for about $20 and use a refillable hand pumped spray container (from House, $15 - will last years). I used to buy cans of olive oil spray at about $3.50 each and by changing how I buy oil, I am saving $100 per year.

• Cleaning products - are now missing from my list - we use bi-carb and vinegar and other simple Vault tips.

• Dishwashing cleaner - has gone too. We use citric acid, which I normally keep for my yearly lemon cordial making.

• Soft drinks and cordials - are rarely bought now - we use juice as you would cordial, and have changed our habits in favour of water.

• Yoghurt - we make EasiYo using packets bought in bulk from GoldenGlow online. Saves about $150 a year.

• Eggs and vegies - in the back yard!

• Condensed milk, Yogo, cake and pancake mixes - we M.O.O. ('make our own') using Vault tips.

• Icypoles - M.O.O. using tinned fruit juice or other - search the Vault!

• Magazines - I never buy new, just pick up the free supermarket recipe brochures or occasionally buy some gardening ones from the op shop.

• Junk and pre-prepared foods - we buy a lot less in favour of having our own 'sausage roll make-athons' or other baking with the kids.

As well as noticing the presence of many of the above things in my sister's shopping, I also noticed she buys small quantities of lots of items I now buy in bulk. Each week she has to mentally or physically check if she 'needs another of...', where I buy large amounts from the supermarket and other cheaper sources - and then don't need to think about it again for at least six months. These types of products include:

Washing powder (I'll never buy less than 20kg, and with the Vault advice to reduce our amount per load, this is lasting ages!), teabags, coffee, shampoo, dog and chook food (from pet supplier every six months), ham and meats(buy large piece of ham and store in ham bag per Vault tip - saves at least $50 a year over my previous habit of buying little cute packets of 50g each), bacon (buy from ALDI and freeze), dishwashing powder (ALDI brand is MUCH cheaper than the Finish tablets we were using - saves us $150 a year at least. I buy 12 months supply on one of my ALDI runs), cheese (buy larger amounts less often and freeze if necessary), rice (10kg bag much cheaper), jelly crystals (I bought 5kg bag at IGA last week - makes 20 serves for same cost as three individual packets), tinned fruit, soup, tomatoes and other products (from SPC outlet), nappies, paper towel and toilet paper (I buy lots when on a fabulous special). Fruit and veg I buy from the greengrocer, the market or grow my own. Meat is from the butcher, chicken from the poultry shop and fish from the fishmonger once every three months.

I could go on for every grocery item - nearly everything has changed in 12 months. This is even without noting the savings from changing products - for example, I used to think myself very clever if I bought my Uncle Toby's quick oats on super special for $2.00 per kg box - until I discovered I can buy Home Brand, which I cannot fault, for $1.00 a kilo all the time. Same for most basic products.

With changes like these to my grocery shop and to our home loan, insurance, shopping habits and so on, Simple Savings has saved us thousands of dollars in our first year of membership. Our lifestyle has actually been RICHER since SS. I didn't set out to change my shopping habits - I just started by making handsoap and buying Home Brand porridge oats - but suddenly I have realised how large this change has been. If I see you at the supermarket with your milk, bread, 8 large packets of toilet paper, 6kg of the super special meat, 10kg of rice and three-litre containers of vinegar, I'll know you caught the bug too!

This tip is from my Mum!

We love Christmas and everyone loves giving and receiving presents. When my mum told me that she had to buy a gift for each of the eight women in her craft group I nearly died! I couldn't understand why they didn't each buy one gift and each receive one random gift.

But was I suprised - they have rules. The gift must be kept to $1.00 and under no circumstances is it to exceed $2.00. You would not believe some of the beautiful gifts that my mother received - handmade decorations for the tree and house that would have cost $20 or more if bought at a shop and an inexpensive hand towel trimmed with a strip of delicate, intricate quilting that used up the creator's scraps.

And there was more. My mum was lucky enough to stumble onto a Royal Doulton Sell-out where she picked up eight tiny dishes, all different and delightful for $1.00 each. She made shortbread biscuits in star shapes and tied them together in pairs like buttons. Wrapped in Cellophane, they made another fabulous gift.

It proved to me that gift giving is not about the cost of the gift, but how hard you make the money work that you have worked for. In years gone by I used to do my Christmas shopping for family and friends on a budget of between $2.00 and $5.00 a person, and I never left anyone out and everyone appreciated their gifts because a lot of thought went into them. I think those gifts meant more than an expensive item bought on Christmas Eve as an afterthought.

Making potato wedges at home is much cheaper than buying them frozen from the supermarket. I use my OXO Good Grips apple divider (bought from a kitchen shop) to cut up a 5kg bag of spuds. I give the spuds a wash before cutting them up into eight wedges and one cylindrical wedge (the kids all fight over these ones). After popping them in boiling water for a couple of minutes I put them onto paper towel to dry, then into freezer bags. These are quick, economical and you can vary the seasonings in different bags, and have them on hand in the freezer for a quick snack or side dish.