I took on the $21 Challenge, and won! However, my husband was a rather grumpy participant; he loved the savings but not the lifestyle during Challenge week. As he goes away regularly, I decided that every night he's not home for dinner would become a $21 Challenge night for the kids and I - all meals must be made from ingredients I already have at home, and I can only use ingredients that have not been allocated for other meals. This saves money and gives me a night off cooking, as my Challenge meals are usually simple affairs, sometimes as easy as pancakes or toasted sandwiches.

The true value of the $21 Challenge became apparent when a friend was recently diagnosed with a severe form of leukaemia. She is a married mother of four boys and is embarking on a long therapeutic journey that will hopefully lead to a full recovery. As a way of helping her family, the parents at our school have banded together to make all their meals for the next three to six months. As they are a large family, with an above average food requirement, I was unsure how I could afford to help feed them each week. Thankfully, my husband was away the week my friend was diagnosed, so the kids and I lived off the $21 Challenge that week and all leftover money was put into making meals to freeze for my friend's family.

We now do the same thing whenever my husband is away – it's a great gift over the Christmas break to know that I can afford to cook and freeze meals for my friend's family, and look after my family at the same time. Thank you.

People are constantly amazed when we tell them that we have managed to whittle down our weekly grocery bill to just $100 for our family of four. Our income may not be all that we would wish, but with a little dedication, we have made a huge difference.

For example, in recent months, we have saved $50 per week on our grocery bill, since we have started throwing away our supermarket circulars! For years, I eagerly awaited the arrival each Sunday of the supermarket 'junk' mail. I would plan our eating to a large extent on the weekly specials, and would stock up on a few of them, believing it was saving me money.

However, once I began throwing them away without even a glance, it had an unbelievable effect! Not only did it cut down on the clutter in the house, but amazingly my grocery bill plummeted. I now buy only what I need - as opposed to what the stores want me to buy - and the benefit is showing. By throwing out the junk mail alone, our weekly grocery shop reduced from $150 per week to around $100, saving $2,600 per year!

I still use a menu plan to help me stick to my budget, but now it is food of my choice, rather than being influenced by supermarket advertising. A typical weekly menu might look like:

Monday - Baked chicken and salad (whole chicken $2.50 from local butcher)
Tuesday - Fish and chips (fish $2.00 per pack at ALDI, I use potato gems or
chips about $2.00)
Wednesday - Pasta bake & salad
Thursday - Taco's
Friday - Baked beans (ALDI's are really cheap at around $0.40c for two cans)
Saturday - Chicken legs, pasta and salad (chicken legs $2.00 per kilo)
Sunday - Quiche & salad

I usually have all the meat I need already available, as I buy in bulk, so all I need to buy for the week are any other items to complete the meals. I buy salads and vegetables on alternate weeks - one week we have salad with everything, the next week I buy vegetables for all our meals. It may sound an unusual way of shopping, but this way there is no wastage; unlike when I used to buy both.

I don’t buy everything in bulk, but some items work out more economical, such as:
Bread - I buy bread from Coles after 6pm to take advantage of the markdowns - for example, $0.50c for a packet of bread rolls, or a loaf of bread.
Chickens - Patton’s, our local butcher have many great specials, including chickens for $2.50 each. I buy ten at a time and freeze them; they may not be huge, but plenty enough for a family meal, plus leftovers for sandwiches.
Fish - ALDI have oven bake fish for $2.00 per packet (the cheaper of the two
versions). They are like large fish fingers, and perfect for us. Combined
with the chips or potato gems, the whole meal for a family of four comes to $4.00.
This is a standard meal for us, and I make sure I buy plenty to last between ALDI visits. Ice cream - I wait for special offers so I can purchase five litres for $5.00 and buy in bulk.
It also pays to buy washing powder and toilet paper in bulk when on special, as they don't go off and you will always need them!

When I was planning my meals around the supermarket brochures, my shopping list was actually doubling - that was without any impulse buying as well! Another thing I also now do to cut down costs, is alternate a meat meal, with a non-meat meal. You will see from the menu plan above how we eat meat and vegetables one night, baked beans the next, or pasta bake and so on. We enjoy our meat, but find we can cope with every second meal being meat based, and it really keeps costs down.

We don’t eat cereal every day for breakfast, it works out too expensive - it’s actually more expensive to eat than steak! We have toast, eggs or grilled tomatoes. With the children, lunches are mainly sandwiches; the kids like their Vegemite, peanut butter and Nutella; the adults make use of any leftover meat. For school lunches, I dropped most of the expensive packaged goods (for example, Rollups) in favour of two sandwiches and a piece of fruit. They still have a lunchbox treat now and then, but it’s sometimes, not everyday.

One tip I have learned which has really helped me is that the family actually prefers me to cook from their range of ‘family favourites’, rather than consulting cookbooks or fancy magazines. If this is what they enjoy - stick to it and save yourself the time and money!

I use a simple principle every day, which helps me save money in all areas of my life. I try to reduce my use or consumption of what I normally do by 10%. The rewards are enormous. For example, if you spend $200 a week on groceries, try reducing it by $20 over 52 weeks and straight away you have $1040 extra in your pocket. You and your family won't even notice the difference, as it equates to less than $3.00 a day!

If you apply this principle to all areas of your life - petrol, electricity, phone calls and so on, the savings are huge even though the sacrifice is not even felt. It not only saves money but also the planet by reducing your overall consumption. Once I achieve this 10% reduction, I do it all over again! Every quarter after the electricity bill comes in, I then set myself the 10% goal anew to keep myself on track and to challenge myself to reduce further. This means the $180 grocery bill then reduces by a further $18 a week and so it goes on. I have done this only to a point where it is comfortable and achievable. Because it is baby steps it is easy and fun and not painful! We have saved hundreds, if not thousands, in the last year or two and are not feeling so pressured by the mortgage rate rises. Best of all is that we haven't noticed any difference to our lifestyle.

If you've just boiled up a pot full of spuds and are about to tip the water down the drain, stop right now! That water is full of nutrients and vitamins and can be used again.
 
Next time you have potato water, you may like to try using it for soups, gravies, stews, as a base for making stock, liquid in baking biscuits, breads or pancakes, or a broth drink! You can even leave it to cool and pour over your garden plants.
 
I have achieved fantastic results since I started to use the potato water in my home-made bread, rolls and buns. It's a great way to get additional nutrients from our foods and a big water saver.

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 am on a very, very low income, so I budget for every bill and expense. I put away bill money every fortnight and that way I have all my bills covered as they arrive, and we seem to just spend the rest. Last year I decided to pay me as a bill, so every pay day I pay me first, just $50. I now have over $1200 in savings. I can't believe how easy it is; just pay yourself before everyone else. The first couple of pays it was an effort not to touch it, but as soon as I saw it mounting up, I got very excited. I tell myself all the time that money is power. While $1200 is not much to some people, to me it's a fortune. Try it - it empowers you.

I make these Cheesy Ham and Corn muffins, which are delicious and at only $0.44 each to make, give me and my family something tasty, cheap and healthy in our lunchboxes. They are yummy cold, or heated up in the microwave.

Makes 12

Ingredients:
1 x 310g can of corn (reserve can for measuring)
½ cup reduced fat milk (1/2 ‘can’)
2 eggs
2 cups of self raising flour - I use wholemeal (2 ‘cans’)
Pinch of salt
2 cups reduced fat grated Australian cheese (2 ‘cans’)
2 slices ham, cut into strips
2 teaspoons English mustard

Method:

Whisk together corn, milk and eggs in a large bowl until combined. Add remaining ingredients and stir until just combined.
Spoon mixture into non-stick ½ cup muffin tray.
Bake at 200c for 15-20 minutes or until golden brown and cooked through.

I no longer use disposable cloths to wash the dishes and wipe down benches.
 
I recently bought two bulk packets of face cloths, giving me eight cloths. Each cloth is the perfect size and thickness for washing dishes and wiping down benches. I use a cloth for a day or two and then throw it into the wash with the tea towels.
 
I have been reusing the same cloths for over a year – just think of the savings now that I'm not buying disposable kitchen cloths every month!

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!

I am a 39 year old mum with five children. I love to have soft skin, but I'm not keen on all those chemicals in general moisturisers. I like natural skin care creams, but they come with a hefty price tag. Thankfully, my grandmother gave me a perfect, all natural solution.

She suggested I try coconut oil, as she had used it as a skin moisturiser and hair conditioner while she was growing up. I purchased a 400ml jar of organic coconut oil from my local health shop for $10.70. I now use it every evening on my face, and every morning as a body and face moisturiser. I also use it as a lip balm and once a fortnight, I melt 1/4 of a cup and apply to damp hair. I then pop on a shower cap, wrap my hair in a towel and experience a moisturising hair pack that smells divine.

My skin has never looked better and my normally dry, curly hair is now soft and shiny. The jar I purchased six weeks ago is still half full and I estimate I will save $380 a year on moisturisers, hair packs and lip balms. Best of all, it's chemical free.