I have saved myself the frustration of constantly losing items from my sheet sets (and the expense of having to buy replacements) by keeping them all together in a simple but ingenious way! I used to be constantly searching for a full set of sheets and pillowcases in my linen cupboard no matter how many times I tidied it up. It's crazy but, in my frustration, I actually found myself buying new sets! Knowing this wasn't a real solution I finally pulled everything out, put all the sets together and placed all the sheets and extra pillowcases inside one matching pillowcase. Since then I haven't lost a single item! I can easily see my sheets and duvet sets and the kids can now find their sets and make their beds on their own.

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!

I was usually a pretty prudent shopper but was always looking at the money I saved as potential cash for more purchases. This meant that in the long run I didn't really save anything and ended up with a heap of things I didn't really need.

I started taking a 'savings purse' with me to the supermarket when I did my grocery shopping. Instead of buying the product I would normally have bought, I would choose the cheaper alternative. For example, I would purchase the 'home brand' biscuits for $1.00 less. That $1.00 would go into my head as a saving. At the end of that shopping trip I would put any 'savings' into the savings purse. I was stunned. After two weeks of shopping and 'saving' this way, my savings purse contained $100.

I began to use my savings purse in other ways. If I managed to refuel my car with cheaper fuel, I would put the difference in the purse. If I wanted a chocolate bar, and I resisted buying it, I would put that money in my savings purse. Even with those small amounts, the savings became huge. Doing this began to be fun; it was a challenge to find extra ways to put money into my savings purse!

To top it all off, not only was I saving money but, by 'resisting' the sweets and chips so that I could put the money into my purse, I was also eating healthier and losing weight. I am so happy with the results.

I am saving around $100 a month on my grocery bills, thanks to a few simple changes to our family meals. I wanted to reduce our food bill and after some thought came up with the idea of making two nights per week a '$2 Dinner Night'. For example, one night we will have something like toasted baked bean sandwiches or stuffed baked potatoes; the other I use up all the leftover vegetables in the fridge to make a self-crusting quiche. This reduces the amount of food we waste and the kids love it. Even the simplest meals can be delicious and filling and the savings we are making from our twice-weekly $2 dinners are well worth it!

Our story is a great example of how thinking outside the square has enabled us to get ahead, even through the toughest of trials. My husband is on a disability pension receiving $450 per fortnight and I work 20 hours per fortnight earning $397. I have chosen not to apply for Centrelink benefits due to the numerous requirements. Our uninsured home burnt down 10 years ago leaving us homeless (I went into premature labour and spent six weeks in hospital with complications so I had somewhere to stay but my partner lived in our car with our two dogs for this time). We were at the lowest point ever and could not imagine how we were going to survive. We were advised to go bankrupt, which we did but we were now unable to get finance (in hindsight an absolute blessing) to get another house.

We did what most people do and rented a house in the suburbs thinking this was it for us. After three years of this we decided to look elsewhere and found a house in 'woop woop' which was $6000 (pre-real estate boom). Using my first home owner grant we purchased our house and although it was two hours from anywhere good, it was ours outright. This in itself is a handy hint to look outside of the box - our 'woop woop' town had a doctor, a supermarket and a school so it was fine and we lived there happily for another three years. At this point the real estate boom happened and we sold our house for $48,000 and decided to look outside the box once again. We ended up 2000km away from home in a place two hours from Adelaide. We still live here happily and after four years the value of our property has gone from $35,000 to $95,000 (I swear getting our first home owner grant was like winning the lottery).

But we still couldn't save any money so two years ago I cancelled my fortnightly family tax benefit from Centrelink (approx $200 per fortnight). It was hard - very, very hard for the first eight months but then it was tax time and I was very surprised when I received a tax return of more than $7000 with my lump sum FTB part A and B. We paid our bills and bought a second hand car. This year I paid a little extra tax each week ($10) and was pleasantly surprised by an $8000 tax return. With this we bought a block of land 30 minutes down the road (in a bigger town closer to Adelaide). The value of this block is double what we actually paid! Some people say we were lucky but luck had nothing to do with it - we were just prepared to live in very yucky houses in areas no one wants to live. Three months ago a house in our town sold for $21,000 which is around the same as the first home owner grant now and there are still others which would be around the same price. We don't have sewerage or town water but we have a school and a pub so it was certainly a change in lifestyle.

Other people have asked how we are doing so well now and I just laugh! We are earning $845 per fortnight and I have chosen not to work extra hours so I can still be a stay at home mum to our diabetic 10-year-old. We have private health cover, Internet, insurance, power, phone, petrol expenses ($100 fortnight), rates, medical expenses and even private school fees to pay but we still have enough to go around and often support other people with food, even though they are making much more than us. This year we plan on buying a second hand relocatable house for our block with our tax return. It may be a form of forced savings by not getting a fortnightly benefit but when it comes in it is amazing. Thanks to careful budgeting and Simple Savings we easily survive!

I am a busy mum of two and my home manual helps my husband and I run our home efficiently, saving money and buying us both precious time to do things for ourselves.
The first section outlines the weekly and daily routines. The daily routine buys me 30 minutes to myself to exercise which makes me feel better throughout the day. My husband can also see when things get done, so he knows what to do if he is letting me have a sleep.
I let the girls watch TV until 9am so that I can complete a chore (clean the bathroom, dusting etc) each day. This helps me keep the house clean and tidy, and then I have the rest of the day to play with my children.
The next section covers dinners for the month. I have a weekly list of which dinners we will have and where to find the recipes for them. This saves time deciding what to have plus hubby or anyone who comes to stay can cook too.
The next section is shopping and supplies. I write all the ingredients needed for the month so I know exactly what I need. I keep catalogues in this section so when it’s shopping time I know where to get the specials.
I also asked for a floor layout plan of my supermarket so I don't need to walk down the aisles I don't need anything from. This saves time (especially when shopping with two young children) and money as I am not tempted by things in those aisles.
I also have a maintenance section with dates when items need maintenance done on them, eg. an oil change for the car. This means everything can be budgeted for and planned and it also helps prevent unexpected expenses, like changing gas bottles.
There is also a budget section of the manual which contains the monthly, weekly and annual budgets in it. We write down everything we spend in this section, so we can see where the extra dollars are spent!
Finally, I have an important numbers section such as insurance companies, medical centre etc so that everyone (including people who are staying) can get to them easily.
The manual doesn't always bring dollar savings, but its our way of making sure we don't waste time doing everyday household things so we maximise our family and down time.

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 grow most of our vegetables to eat healthy and save money. I save all scraps to compost and I wanted a tumble composter. They turn lawn clippings and scraps into compost in 14 to 21 days. The composter is priced at $410. I bought a 240 litre plastic drum (cherry bin) from the local trash and treasure market for $5.00. My husband drilled holes in the lid. It doesn't have a frame but I roll it on the lawn for five rotations once a day and I make compost in 21 days. It isn't hard to roll but I can't empty it into a wheel barrow (I'm only five feet tall) so I spread a sheet of plastic on the lawn and tip it out onto that. The compost is fantastic.

One year a friend gave me a money tin and on the side of it was printed, 'If you fill this tin with only gold coins by the time it's full you will have at least $500'. It really didn't look big enough to hold that amount of money, but I love a challenge so I decided to find out if it could!

We started in March and any gold coins we had went into the tin. Our goal was to open the tin at Christmas and use it to pay off lay-bys plus have some spending money over the Christmas break.

November rolled around and the tin wasn't quite full. However, when we opened it up and counted our 'gold' we were very surprised and extremely happy to discover we had collected $700 in our little tin!

Because of that little treasure chest of gold we enjoyed a fantastic stress-free Christmas! I was able to pay for all the presents for our immediate and extended family as well as cater for a great Christmas day feast, AND we had spending money left over for the holidays.

Now it's a family tradition. My sceptical husband happily donates all his gold coins to the tin and my 12-year-old will go hunting for gold coins just to add them to the collection! I know that I don't have to worry about the financial strain of Christmas any more as my tin has got it covered.