Here is a hint that has saved our family time, money and arguments, not to mention countless wasted scraps of paper. This year we purchased a large diary for family use, labelled it 'Bench-top Notes' and sat it on our bench. In this diary we write notes to each other that in the past, would have been on scrap pieces of paper that would often be missed or mislaid. Anything from appointment reminders, details of missed phone calls, housework or instructions for our teenage boys, or just simple but personal notes to each other such as 'Hi sweetie, have a great day, I love you, see you at 5.30!' and so on! It has tidied up our bench-top, kept us all organised and an added bonus is that we can look back on our entries for confirmation of bills being paid, appointments kept or cancelled with the reason why and smile at the little love notes to and from each other. This diary cost about $12 but it now contains the priceless and lifetime memories of our 'Bench-top Notes'.

I have found a great way to stop impulse buying. I turn the money I would have spent into a 'roundtuit'. A roundtuit is one of those things you always put off and say you will get 'around to it'. Have you always wanted to learn to ride a horse or treat yourself to a massage? Or buy an art print but, because of the expense, have never got around to it? Well, I now put the money I would have spent on impulse buying straight into my roundtuit fund.

Instead of buying that glossy magazine, I look at the price and I put that amount into a special pocket in my wallet. I try and jot down what I nearly bought as well. When the time comes to buy the art print I have always wanted, I can see that it was worth two magazines, a fast food lunch, a shirt on special and a home delivered pizza. I don't feel guilty because the purchase has been funded by my roundtuit fund.

I no longer waste money on stuff I don't really need and I can also see where I am most likely to waste money, which will hopefully protect me from temptation. Most importantly, I'm able to achieve my dreams, almost without realising it. It's a great way to save for what you really want, so isn't it about time you got around to it?

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.

When you are going out for a picnic or taking lunch to work or school, use cloth to wrap the sandwiches. This is much better than cling wrap or foil because it's cheap and reusable. I use tea towels, napkins and chopped up table cloths to wrap my sandwiches. The sandwiches stay fresh and when I've finished, I just shake off the crumbs and take the cloth home to be washed and used again.

There is something pleasantly old-fashioned about this method - and just think of all that plastic not going into landfill.

I am no longer wasting leftover avocado, thanks to this simple storage tip! I have always loved avocado but could never use a whole one in one go. I would use about a quarter for my lunch but by the time I went to use the rest it would have gone brown and didn't look very appetising! Avocados can be quite pricy so the expense of wasting so much was very annoying. Then my new partner, who is chef told me how to stop the browning! I didn't realise but the longevity of avocado is due to light. He advised me to wrap the avocado in aluminium foil and then wrap it in cling wrap and put it in the fridge. To my surprise it really works! Now I get to enjoy ALL my avocado and save heaps too!

My husband and I have set a goal to pay off our mortgage within five years. We have a way to go, but keeping this goal in mind has helped us to curb our spending.

I worked out that any amount I put on our mortgage is actually worth five times that amount due to the saving in interest. So when I am thinking about spending $20 on a top, I multiply this amount by five and realise that I do not want to spend $100 on a $20 top! That $20 would be much better invested if it was put into our mortgage.

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.

Buying Christmas presents for adult friends and family can be both expensive and stressful, especially when trying to match the perfect present to the person.

So one year I decided to make up small deluxe hampers which contained a mini bottle of sparkling wine, two plastic champagne glasses, chocolates, mixed nuts and home-made shortbread. I purchased the gold wire baskets from the Reject Shop for $2.00 each and the glasses (also from the Reject Shop) were $2.00 each. The mini sparkling wines were purchased from Dan Murphy's and worked out at around $3.50 each when purchased in lots of six. The chocolates were a good quality brand, and individually wrapped, so I bought a large tray and then divided them up (which was cost effective as I only needed around three in each basket). I then purchased a large bag of mixed nuts, which I repackaged into small Cellophane sachets, and I made the shortbread, which worked out to only a few cents each.

The overall cost of each hamper was around $10, including the cost of gold tissue paper (also purchased from the Reject Shop) to line the baskets and ribbon for decorating. I suggest sticking to one colour theme for each hamper, for example, gold covered chocolates, ribbon and baskets or silver baskets and accessories.

It's a good idea to look in places like the Reject Shop or $2 shops as soon as you see Christmas decorations appearing on the shelves. That way you get the best selection and can start putting them together early (except for the shortbread or any home-made foods you choose to include in the hampers). This way you'll have plenty of time closer to Christmas to concentrate on the children's presents!

I saved heaps of money, made something original and had heaps of fun doing it!

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!