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 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!

Here's how to lose weight and save!

A couple of years ago I joined Weight Watchers and went to four meetings. Joining was free from a coupon in a magazine but the meetings cost something like $15.95 each. I couldn't get motivated!

A few weeks ago, as I was bucketing the bath water into the toilet cistern to save water (a tip from Simple Savings), I realised that I am doing the exact same thing that Weight Watchers meetings could not motivate me to do. At WW the main things they encourage you to do are to eat 10% less at meals (this also helps the budget at shopping time) and to exercise more (this comes from carting water between the bath and the toilet and using the rain water tank to water the vegie patch and so on).

I am now losing about half a kilogram a week without even trying and I'm not paying $16 to do it. In fact, I'm making other savings as well - our last water bill was $40 less than that for the same time last year.

What has also happened for me in the last few months is that while saving money I have also become better at time management - planning meals for a month and shopping with a list have cut out a lot of unnecessary trips to the shops (not to mention the extra expense). I have cut $60 from my husband's spending money by supplying his lunch every day, along with some soft drink, a large bottle of water and a snack. He is happy because he still has a small amount of 'sanity money' in his pocket to splurge with every week.

My food budget absorbed this when I switched from a lot of brand name products to BI-LO brand products - I save from as little as $0.10c per item up to a couple of dollars per item. The biggest savings I make come from bulk buying - last month BI-LO had five kilograms of potatoes for $5.00, but when I went to the greengrocers they had them at $6.00 for a 20 kilo bag. These lasted for about a month and I couldn't bring myself to go to the fish and chip shop when I had 15 kilograms of 'free' potatoes in the pantry, so we had home-made wedges instead, saving another $6.00.

The excitement of saving money has also inspired me to do the things that I don't enjoy so much, such as mending and ironing, and I am gradually working my way through every room and cupboard, taking inventory of what can be used and how best to use it in a way that will save me money. I never thought I would actually look forward to going through years of accumulated junk! By organising my house, I am becoming a 'cleanie' and leaving the old 'messy' me behind - and I am enjoying every minute of it!

I can make four litres of handwashing gel soap for under $1.00! To make your own liquid gel soap, grate a bar of Sunlight or generic laundry soap into a two litre ice cream container. Pour boiling water to half fill the container and mix to dissolve the soap. Carefully fill to the top with boiling water and mix well. Pour half the mixture into another two litre container and top up both with boiling water again. The gel is very thick once it sets, but a good consistency for its purpose. Store in the two litre containers and refill pump bottles as needed. One pump is all it needs to clean your hands and can even wash dirty dishes if you squirt into the sink!

These bath bombs are great to give as gifts or to pamper yourself with! This recipe should give you at least four to five good sized 'bombs' and cost as little as $1.00 to make. All you need are the following:

1 1/2 cups bicarb soda

1/2 cup citric acid

Scent or fragrance of your choice (you can use essential oils if you have them)

Food colouring of your choice

Sweet almond oil or any cooking type oil

Flower petals if desired

NOTE: Make sure everything is dry. Even the smallest hint of moisture will make the ingredients fizz.

Sift the bicarb and citric acid into a large bowl, add petals if desired then divide mix into four separate batches.

In another bowl, mix one tablespoon of oil, enough fragrance to suit you and enough food colouring to get the desired colour. Mix well. This mix is enough for one of your small batches of dry mix.

Add the colour and fragrance mix to a batch of dry mix and mix in with fingers very quickly, making sure that it does not fizz. Mix well to make sure the colour and fragrance are distributed evenly.

Press firmly into lightly oiled moulds. You can use just about anything as a mould. Try using the plastic lid from a can of hairspray or jelly moulds if you have some. You can buy bath bomb moulds from some craft shops. Make sure that you press the mix firmly into the mould, otherwise it will crumble.

Leave in a dry spot for about 24 hours, then gently press them out and enjoy!

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.

This super basic mince recipe saves me up to $100 a month on takeaways, thanks to the convenience of having meals already 'half made'.

All you need are:
2kg minced beef
2 cups of red lentils
2 tbsp of vegetable stock powder, or four vegetable stock cubes
1 tsp dried garlic granules
1 dsp dried onion flakes
4 cups of water.

Place all the ingredients into a crockpot and cook on high for two hours, stirring every 30 minutes. It should be thick, aromatic and an unattractive brown colour (don't let this worry you!).

One batch costs just $13 to make and is enough to serve as a base for seven meals for our family (two children and two adults). This saves heaps of money and time too. I usually freeze the mince in margarine tubs, as that seems to be the right amount for one meal for our family.

The meals I made are:

1. Piemaker pies.
   Allow one heaped tablespoon of basic mince per pie. Pour the mince into a small saucepan and add a large spoonful of gravy powder, or a dessertspoon of cornflour and some Vegemite for colour. Heat and stir until thickened. Spoon into pastry cases and cook in the piemaker.

2. Mexican enchiladas.
   I use Mountain Bread or make my own crepes. Lay the bread or crepes in u-shapes in a large baking dish. Mix the mince with an equal amount of tinned or home-made refried beans. Spread the mixture in a sausage shape down the middle of each crepe, fold each side of the crepe over, sprinkle with grated cheese and bake at 180C until the cheese is melted and bubbly. Serve on a bed of rice, topped with natural yoghurt and some salsa.

3. Stuffed capsicums.
   Halve enough capsicums for half or one per person. Spoon the mince straight into the capsicums, top with some mashed potato, pumpkin or sweet potato. Sprinkle with cheese and bake for 40 mins at 180C. Kids love these as the capsicum sweetens when baked.

4. Baked spuds with topping.
   Allow one potato of appropriate size per person. Cook in the microwave according to manufacturer's instructions. Split a cross in the top and pile filling into the opening. Top with natural yoghurt or sour cream and chopped, sauteed bacon. Allow one large tablespoon of filling per potato. Mix the filling with one tin of baked beans and heat in a small saucepan before pouring on to the potatoes.

5. Spring rolls.
   Mix about four tablespoons of mince mixture with a packet of cooked and cooled Two Minute Noodles, some shredded carrot, and 1/2 teaspoon Chinese five spice. Using filo pastry sheets or spring roll wrappers, fold a small handful of filling into each spring roll. Spray liberally with cooking spray and bake at 180C for 20-30 mins.

6. Greek pasta bake (Pastito).
   Heat a container of mince mixture with a 400g tin of peeled tomatoes. Cook enough macaroni for your family and drain well. Mix with the meat mixture and spoon into a large baking dish and top with your favourite white sauce or cheese sauce. Sprinkle on some grated cheese and bake for 40 minutes at 200C.

7. Shepherds pie.
   Add any vegetables of your choice to the mince mixture. Place into a baking dish and top with mashed potato, pumpkin or sweet potato then bake until heated and the potato browns.

Make over 120 bickies for just $4.00! This fantastic basic bickie recipe is terrific value, makes loads and has lots of room for variations:

500g margarine
1 tin condensed milk
1 cup sugar
5 cups self-raising flour

Cream sugar and margarine. Add condensed milk and flour. Roll into teaspoon sized balls and press down with a fork. Place on greased trays and bake in moderate oven until golden brown (approximately 10-15 minutes).

Before baking I divide the mixture into five and add the following ingredients for different flavoured bickies:
1. Chocolate chips and glace cherries (chopped)
2. Cornflakes and sultanas
3. Hundreds and Thousands
4. Jam drops
5. Milo and coconut

You could add any number of other things like Rice Bubbles, Smarties, nuts, cinnamon and other spices and so on. The raw mixture can be frozen in balls, just thaw slightly before baking.

From this one batch we made 123 bickies and by my calculations using the cheapest possible ingredients, the whole batch cost just over $4.00 to make!

After reading every newsletter on this fantastic website, I decided to make changes to our household budget.

I started by rummaging through the cupboard, where I found an insulated plunger coffee mug that my husband and daughter had given me as a gift. The mug had never been used as I found it easier to grab a 'latte to go' on the way to work. I bought a tin of ground coffee beans for $6.65, figuring that this tin, with its plastic lid, could be refilled. I now keep this tin in the fridge at work. So, instead of buying three lattes a week at $3.50 each, I now allow myself one a week or sometimes just one a fortnight.

While buying my latte I would sometimes purchase an English muffin with bacon and egg. I now have muffins in the freezer, bacon rashers trimmed and have perfected the three minute poached egg. The bacon takes one minute in the microwave and the muffin is toasted in no time. If I am in a hurry, I wrap the bacon and egg muffin in a small piece of alfoil and take this to work. So instead of paying $14 per week, or $672 per year, I now buy the ingredients for the equivalent of $1.45 per week, saving just over $600 per year. Wow!

You have no idea of how proud I feel. I have saved so much money and it's thanks to your wonderful site.

We made our own white board for next to nothing out of an old glass frame and some white spray paint. I got an old picture frame with glass in it for $4.00 from Vinnies. I took out the glass, cleaned it and spray painted one side with white paint. I then painted the frame black and put it all back together again with the painted side of the glass on the inside, and my new white board was ready. I use regular white board markers on it and it only takes a tissue or cloth to wipe off.