As a new member, I have saved $150 in my first week, thanks to the $21 Challenge! I thought I was careful with money until I discovered this site and realised how I could further improve my spending habits. I decided to give the $21 Challenge a go and it is now Thursday and I haven't been to the shops yet!

I have become a problem solver due to the fact that I must use what is in the fridge/freezer and pantry. I nearly buckled when my four year old wanted 'pink milk' and I had run out of Nestle Quick but no problem in the end. I found some rose pink food colouring and with just one drop - presto, pink milk! It does take some preparation because you are cooking from scratch but it is all worth it when your family tells you that the dinner you made tonight was the best, and is there any more?

My other dilemma was to use the three zucchinis in the crisper, so I made them into a slice. It was so easy to make and I had every ingredient on hand without even trying!

Zucchini Slice (serves 4-6)

3 zucchini (grated)
1 onion (grated)
1 potato (grated)
4 slices of ham/bacon (chopped)
1 cup of cheese (grated)
6 tablespoons flour (plain)
3 eggs
salt/pepper

Put all ingredients into a big bowl and mix really well. Pour into a quiche dish and cook in the oven for one hour at 160C. If you are vegetarian, simply leave out the ham. Simple, delicious and super cheap!

I make home-made yoghurt in my EasiYo maker for as little as $0.50c per kilo. You don't need to buy the special sachets, all you need is milk powder and a couple of tablespoons of plain yoghurt. I just use 1 and 1/3 cups of milk powder and two heaped tablespoons of yoghurt (saved from the last batch). Easy, cheap and delicious!

A few simple lifestyle changes have helped me lose 26.5kg AND slash my food bill by $35 a week! Over the past six months I have developed my own healthy eating and exercise regime. I began by pushing my one-year-old for an hour a day to the park and around the shops at a brisk pace, using our $20 eBay running pram. I also invested in some second hand hand weights and after extensive research on the Internet, I started my own regime of weight training exercises.

Food-wise, I began buying in bulk and made my own nutritious meals, rather than relying on 'ready to eat' microwave health meals. This way I knew exactly what was in each meal and there was never any waste. I started making my own meal plans and eating smaller portions, going from a 3000 calorie-a-day diet to 1500-1600 calories per day.

Under my new regime I soon began to lose the weight, but the real bonus for me has been in the savings I have made. Changing the way I ate and my portion size has resulted in me saving $35 a week over the past 26 weeks! A win-win situation all round. No personal trainers, fancy diet shakes, pills or supplements - I simply used what I had. I feel fantastic and have the energy levels of a teenager! If I can do it, anyone can!

I've saved money and taught my daughter a valuable skill at the same time.

My twelve year old daughter has a passion for fashion, but little realisation that everything costs money. It seemed that every time I went shopping, there would always be something my daughter just had to have. It can be difficult determining if a request for something new is a necessity or not, so to stop myself sounding like the 'no police', I put the decisions back on my daughter.

I opened up a bank account in her name, with a key card attached. I worked out how much per year I would need to spend on her clothing, including shoes and accessories, but not school uniforms. I divided the yearly cost by 12 and I now deposit her monthly clothing allowance on the first of every month.

My daughter was so excited to have her own key card, and new responsibility. I did have to explain that when winter approached she would have to have enough money saved for new winter clothes and that she couldn't just spend her entire allowance every month.

Now, when we go shopping and asked 'Can I have one of those?' my answer is, 'Sure, can you afford it.' I am amazed at how many times something is picked up off the shelf as something she just has to have, yet we end up leaving the shop without it. And, I'm thrilled that I no longer have to be the one who says 'no'.

It has only been a few months but I have already saved a small fortune and my daughter is learning how to budget.

This simple tip saves money on toilet cleaners and air fresheners! A cheap and easy way to keep the toilet clean and smelling fresh is to make your own antibacterial spray. I have a spray bottle on the window sill filled with water and a few drops of tea tree oil. After each flush, we spray two or three squirts in the toilet bowl and close the lid. It keeps the room smelling lovely and our toilet sparkling clean without yucky chemicals.

I have found a cheap and healthy way to make preservative free fruit straps that kids love. This works best with pears and apples, just boil them up, then puree them, making sure there isn't much water left.

Once you have done this, spread it out in equal portions onto baking paper and bake in the oven for a few minutes. Allow them to cool and there you have it! Freshly made fruit straps with no extra preservatives in them. Healthy and fun for the kids to help prepare. You may need to add a little sugar or sweetening agent if you are using more sour tasting fruit.

Slash your washing powder costs by using a tablespoon of washing powder in your machine instead of a scoop. It works just as well! My sister was learning about budgeting and the speaker mentioned that you could get the same wash results by using one flat tablespoon of washing powder as you could if you used a whole scoop. I decided to test this theory and found that even with a full load of washing this proved to be true. I buy a top brand washing powder that costs around $10 per two kilo box and it contains around 148 tablespoons. I used to go through a two kilo box of powder every four to six weeks when I was using a scoop. Generally I do a load of washing every second day, so using one tablespoon per wash, my box of washing powder should now last me nearly 10 months! Just changing this small habit will save me $90 every 10 months on washing powder!

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!

Our family home is always a clean and happy one, thanks to our weekly raffle! With four children aged from 12 down to two, there is always so much to get done, so we started our very own 'family raffle' as an incentive to get the chores done.

A list on the fridge displays all the categories for a raffle ticket. Some examples are - clean bedroom floor, do a load of laundry, give a music recital, finish homework by 5pm, clean the windows, play with the baby and so on. Every time a chore is completed, the child fills in a raffle ticket with their name and the task done. Then, every week at the same time, we pull out the prize winner. They receive a prize from the discount store - some kind of age appropriate toy such as a pack of cards, fancy pencils and so on, to a maximum value of $5.00. The remaining tickets are pulled out and all are given five points each. Every child who has reached 20 points during the week also receives $5.00. We get so much housework completed this way! We deposit the money in the children's bank accounts online and they are encouraged to save it, or can spend it on something special. This really helps when they need to buy a birthday gift for their friends and can even pay for their own outings and movie tickets. I read every chore they complete out loud and the pride in their faces is worth every cent!