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.

About a year ago my husband and I were having lunch at a seaside cafe when we noticed the people next to us paying their bill with $5 notes. We found out that they were on a trip around Australia and every time they were given a $5 note, they saved it and used it toward their food bill.

Thinking this was much better than saving $2 coins, I started doing the same. As soon as I receive a $5 note in my change, I pop it into my purse and then put it in a money box when I get home. I keep track of how much is in the box by writing the amount in my diary; when I get to $500 I empty the money box, take it to the bank and put the money into a term deposit for a rainy day.

So far I have saved $1435! I never miss the money and most times I go shopping I come home with at least one $5 note!

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!

We have found that changing our brand of dog food from a 'cheap' supermarket brand to a vet-only brand has effectively saved us $5,000.

We used to feed our pets a good quality but cheap brand of food, costing around $20 per week in two kilo bag lots. We decided to experiment and switched to an ultra premium brand that is only available from veterinary hospitals and some pet shops. At $35 for a two kilo bag, it was quite a shock and we thought this was a mistake! However, we stuck it out for a month as planned and came to the following conclusions:

1. They gained condition, coats were shinier, softer and thicker and whiskers grew longer and stronger.
2. They had more energy but lost their tendency to behave like children at a five year old's birthday party!
3. They 'pooped' less and the odour of their urine and faeces was reduced by at least 75%.

The biggest realisation was that they only ate their way through half a bag every week, meaning we were now saving $10 a month just on food alone. Plus, we no longer had to feed supplements and we saved money on litter and both time and money on litter tray cleaning.

In the long term, we have found that their odour has decreased so much that they only need a shampoo bath every six months, not every two weeks as previously.

We have also had less trips to the vet and some chronic conditions have disappeared or become easier to manage without medication. A saving of close to $5,000 per year for us. We love our local vet and so do our pets, so we still visit regularly - but only for a cuppa and a chat!

I make this vegetable pasta sauce for three reasons - it's cheap and healthy and it uses up leftover vegies (cooked and uncooked) so I save three times!

Whenever I serve up a dish of vegies for dinner (usually broccoli, carrots, beans and zucchini in my house) and it isn't all eaten, I put the leftovers in a ziplock bag and throw it in the freezer. Then, when my fresh vegies are starting to get to that 'oh dear' stage, I start cooking!

In a big pot, with a bit of olive oil, I fry onion and garlic and add all the 'oh dear' vegies - sometimes there is a fiddly bit of broccoli that is too small to use in a meal or carrots that are starting to wilt. Other vegies I have added include celery, cauliflower, broad beans, spinach, cabbage and capsicum. I chop and cook all of this - in summer I add fresh tomatoes, in winter I throw in a couple of cans of Home Brand tinned tomatoes. To this I add the frozen leftover vegies, a squeezie stock concentrate or stock cube and some water.

I cook the whole lot until everything is soft, and then I blitz it in a food processor or with a Bamix until it looks like pasta sauce. I then freeze this in meal-size portions and use it for everything - I add it to mince for bolognese, or just use it neat. My kids don't know it's full of vegies - they just think it's another jar of commercial pasta sauce!

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 can make hundreds of litres of liquid plant food from just $12 worth of Dynamic Lifter pellets! This will buy a 10kg bag. Just add around four handfuls of pellets to a nine litre bucket of water and let steep for a couple of days, mixing occasionally. When you have a nice 'tea', pour a couple of litres of the liquid, into a nine litre watering can, top up with water and give your garden a drink. Repeat until all the 'tea' is gone, then add more water to the residual at the bottom of the bucket and repeat this process. As the mixture gets weaker, you can use on seedlings, vegetables and more delicate plants such as azaleas and gardenias. The 'weak' mixture can be used as a health tonic or sprayed directly onto the foliage of plants (remember not to spray if the weather is over 20 degrees Celsius, as this will burn the foliage). Once you get to the real weak stuff, simply pour the residual under a tree and water in well.

You can also make hundreds of litres of liquid fertiliser from a 10kg bag of Blood and Bone pellets at an initial cost of approxiamtely $1.20 per kilo. Compared to a litre bottle of liquid plant food (such as Seasol) which costs about $10 and will make just over 300 nine litre buckets (going on the manufacturer's average of 30ml per bucket), your bag will make many hundreds of buckets of first grade solution followed by many more second and third grade 'weak' solutions which are ideal for foliar feeding. A huge saving, which will give you enough fertiliser to last you a whole year or more!

Skint but stylish. That's how I like to think of my lifestyle, because it is such fun to live on the smell of an oily rag without anyone else knowing! Eighteen months ago, although in recovery from depression, I found myself many thousands of dollars in debt and with several accounts having been sent to collection agencies. I was also 31kg overweight and at risk of cardiovascular disease and Type 2 diabetes. The excess weight (not to mention the stress!) was also making my arthritis worse. I was no longer able to work in my former profession and, as I was in my early sixties, I wasn't able to find other work and was on Centrelink (Social Security) benefits. I have since been transferred to the Age Pension. I knew I had to make some drastic changes, and pretty darn quickly too! I had just a few things going for me:

• My Visa card was a debit, not credit, card.

• My account was with a credit union, rather than a bank, and fees are much less.

• I was knowledgeable about nutrition.

• I was willing to face unpalatable facts about myself and make lifestyle changes.

With this small armoury, I prepared to do battle! The first thing I did was to sit down with all the paperwork, and list all the accounts, personal loans and the total. I nearly had a heart attack right there and then, but with the information, I was able to draw up a projected payments schedule. I contacted all the collection agencies and told them how much I proposed to pay each fortnight until all were paid. I did the same with private lenders. Nobody turned my proposal down; it really is true that, if you get in contact and show willingness, most lenders will give you time to pay. They would rather have their money than you in jail!

Step 2 was to organise payment of my electricity account by direct debit from my pension - what you never have, you never miss. Once the phone bill was paid off and reconnected, I did the same with that too. In all, my debt reduction program was going to be about $200 per fortnight, or roughly 34% of my pension and Centrelink allowances. Since my rent costs another 34%, the remaining 32% had to stretch to cover food, cleaning materials, clothing, pharmacy costs over the pharmacy allowance, fares for trips outside walking distance, presents, postage, life insurance and credit union fees (direct debit from my credit union account), occasional small charitable donations and the occasional small treat.

Step 3 was to go on to a sensible eating program (not a fad diet) that would help me to lose weight, bring my blood glucose and serum cholesterol levels into the normal range. A low GI, high carbohydrate, moderate protein, low-fat pattern fitted the bill in all respects. The challenge was: could I do it on $50-$75 per fortnight? The answer is yes! I make my own wholemeal bread, soups, skim milk yoghurt and lots of interesting dishes from many countries, based on grains and vegetable proteins, and stock up on tinned oily fish for essential fatty acids when on special. I have red meat and poultry only once or twice a fortnight and the rest of the time my proteins are derived from legumes, eggs and low-fat cheeses. It's just as well that I like oats! I drink two litres of water a day and make my own herbal teas from homegrown herbs. I don't buy soft drinks and buy leaf tea rather than tea bags, as it's better value per unit serving. I find whole fruit better all round than juice as a rule.

Step 4 was to get mobile! I walk, because I can't afford gym membership, and walking can be done by those who can't jog. Being out in the open air blows away the blues too. Having won a free pedometer, I wear it and try to reach 10,000 paces a day. I also started a vegetable garden and this saves me money where it counts, on vegetables, as well as being another source of fresh air and exercise.

Is it working? Is it what! In the last financial year I paid off $5000 in debts on the pension alone, and am on track to achieve the same amount this financial year. I lost 13kg in the same period - a nice, sustainable rate. My blood glucose level is normal, my serum cholesterol almost so, although because of familial hypercholesteraemia, I need some medication to help with that. I am continuing to lose weight slowly but surely and have much more endurance and less pain. My GP is nearly as stoked as I am. I take care of my clothes, believing that 'well-pressed is well-dressed', so my appearance doesn't give me away either. Occasionally I earn a little money from magazine contributions and this usually goes towards seeds or something else for the garden, but occasionally I restock the pantry with staples. I make my own cleaning products with such simple substances as vinegar, bi-carb of soda, washing soda crystals, soap scraps, eucalyptus oil and - wait for it - Worcestershire sauce (cleans brass and copper a treat, and one nearly always has it handy). I turn my appliances (apart from the fridge) off at the wall when not in use and have noticed a difference in my power usage. All my incandescent light bulbs have been replaced with long-life fluorescent ones, and by crafty use of acrylic-lined curtains I keep my house cooler in summer and warmer in winter. I pile on the clothing layers in winter and wear cool clothing in summer. If I'm watching TV in the winter, I cover my legs with a woollen rug and put on another cardigan if necessary, rather than turn up the heater.

Because I can't afford much for presents, I give of myself. A nice present is a 'book of vouchers', made attractively and containing such redeemable coupons as: 'This voucher is good for two hours' ironing... or an evening's baby-sitting... or... whatever!' Very few people say no to home-made goodies either. It makes me feel truly wealthy to give someone a loaf of bread still warm and fragrant from the oven, or a jar of chutney.

We no longer spend up to $5.00 on a birthday card. Now we spend $0.15c at the very most!

All we do is take a photo of the family holding up a sign that reads 'Happy Birthday'. I have had a pile of them printed off and we simply write a personalised message on the back of each photo.

This great idea can be used on any occasion, including Christmas. So say cheese and save bread!

For a great-tasting, quick, healthy and inexpensive breakfast, make your own egg McMuffins.

Fry six eggs, using egg rings, (if you don't have any, check your local discount store), fry bacon if you wish, and toast your muffins. Once all ingredients are cooked, assemble egg McMuffins, including sliced cheese and bacon if you like.

Once assembled, wrap each muffin in alfoil and freeze. In the morning, simply take the muffin from the freezer and cook in a moderate oven for 20 minutes. For an even quicker breakfast, unwrap from alfoil and wrap in paper-towel. Place in microwave for at least one minute, depending on microwave.

My kids love these for breakfast, and they only cost around $0.60c each!

I buy Home Brand English Muffins which are around $1.60.