This idea is for those who live in a home with a garden that is too small to have a compost bin. I use an empty garden pot, cut a square of one of those net bags oranges come in to cover the hole of the pot. Put in a layer of old potting soil (from a pot where the plants have had their day). Each day save your fruit and vegetable scraps in a container. Place in a layer of scraps, then cover with another layer of old soil. Repeat layer by layer until the pot is nearly full, ending with a layer of soil (water as you go).

Then, while the compost is breaking down and baking, plant some seasonal seedlings on top and in no time you will have potted colour and compost underneath, not only feeding your seedlings but ready for the garden when the flowers are spent at the end of the season. I sometimes benefit from crops of vegetables germinated from the seeds in the compost such as tomatoes, cucumbers, capsicum and butternut pumpkin.

This is a multi recycling exercise using unwanted orange bags, unused pots, old soil and fruit and vegetable scraps and, of course, it is a great medium for the latest seedlings. Instead of flowers on top you could plant your favourite herbs while the compost is baking.

As part of my $21 Challenge to use all the food in the pantry, I have set up a 'use up soon' basket containing items getting close to their use-by date. This way, I will remember to use things before I have to throw them out.

A fantastic and unique gift for under $25 is the 'Useful Box'. It makes an ideal Christmas gift but can be used for any occasion. Basically this comprises of a pretty box which contains lots of those little useful things everyone needs but doesn't always have in one place; such as extra pens, string, Blu-Tac and so on - all the sort of things you want now and again but don't usually have on hand when you need them!

By buying all the supplies at the supermarket and a beautiful gift box at a discount store to present them in, I was able to create an entire Useful Box for just under $25, but you could make it even cheaper depending on where you purchase your supplies. To make it extra special, I wrote a little poem to go with the package! Here is a breakdown of the items I bought and their prices:

Bag of rubber bands - $0.69c
Self-contained sewing kit - $3.98
2-hole pencil sharpener - $0.79c
Paperclips - $0.59c
2-pack of stickytape - $1.19
5-pack of blue pens - $1.99
3-pack of 2B pencils - $1.29
2-pack of erasers - $0.55c
Post-it notes - $0.99c
Permanent marker - $0.83c
Blu-Tac - $1.80
String - $1.99
4-pack of AA batteries - $4.07
Gift box to put it all in - $4.00

TOTAL - $24.75

Other things that might be useful to add include fridge magnets, staples and safety pins. I do recommend keeping everything in its original packaging, to avoid people being stabbed by pins or the erasers getting grubby. Just pop everything in the gift box (including the poem if you wish) and either wrap the box itself up, or simply tie it securely with ribbon.

I printed my poem out and taped it to the underside of the gift box lid, then wrote in the card 'be sure to look under the lid!' You are welcome to use the poem below to make your own 'Useful Box'.

'The Useful Box'

I am a box of useful things,
Gathered from across the land.
Inside me find those things you need
But do not always have on hand.

Next time you scratch your head and think
'I wish I had some Post-it notes'
Just open up my lid and find
The very thing you needed most.

When pencils break or pens run out,
When sticky tape just disappears,
When batteries fail or string is needed,
Let this box allay your fears.

So use me as your Useful Box,
And if you wish please add to me
Those things you like to have on hand
So wanting you need never be!

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!

My husband and I have began saving up to $30 per week on our grocery bill since we invented 'Grandma's Day!' When we go to the supermarket we ask ourselves, 'would Grandma have been able to buy this item in her day 60+ years ago?' If the answer is no, then we decide we don't need to buy it either! This saves us money on a whole range of items such as fancy dips, designer coffees and biscuits. We used to pay over $3 for a pack of 10 biscuits, now I can make 12 biscuits for around $1. Using plain yoghurt as a base we are even making our own dips; there are so many websites with great dip ideas. Now we are saving valuable money and our waistlines too!

Swapping roles with my husband forced him to start budgeting and to learn to take control of our finances!

My husband and I are happily married and are about to celebrate our 50th wedding anniversary, but there was a stage in our lives when we were raising three children and our finances were incredibly stretched, yet he refused to accept it.

One day there was no bacon for his breakfast (he likes bacon every day) and he lost his temper. Rather than get angry back, I wrote him a letter resigning as housekeeper, mother and wife and gave it to his secretary.

He finally agreed to talk and I got him to agree that for one month he would take responsibility for running the house on the budget I had been working on. It wasn't long before he asked 'How on earth do you manage? We need to reassess our finances'.

Since then we have always cooperated when it comes to getting through a tough period.

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.

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.

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 found a way to save almost $50 a year on liquid hand soap with hardly any effort! Just take a bucket filled with four litres of water. Drop a bar of generic soap into it and let it soak for 24 hours. Give it a mix and pour into clean two-litre milk bottles. Just top up pump bottles when needed. For a little added luxury, add half a cup of sorbolene cream and a few drops of glycerine. Works a treat!