To enjoy the convenience of pre-grated cheese, buy a block and grate your own - much cheaper than spending money on those costly supermarket bags!

Buy a block of cheese, grate it into a large ziplock bag and add a rounded tablespoon of cornstarch to the bag. Shake well.

This keeps the cheese from sticking together in a lump and you can store it in the freezer for as long as you want. It thaws almost instantly!

I have two daughters who live at home with me who are both university students. They both work part-time and pay me $50 a week each for everything. (And I mean absolutely everything!) I had begun to get sick and tired of their wasteful habits! I would find half eaten muesli bars lying around, week-old uneaten fruit, discarded shampoo bottles and toothpaste tubes with enough in the base for three or four more uses, soap in the bin which still had plenty of use left in it and the list goes on! Quite frankly, I'd had enough! I told them to keep their $50 a week and instead they could buy everything for themselves (snacks, lunches, toiletries and so on). I would provide their one evening meal and that was it. I even made them buy their own toilet paper. Well after two weeks they have decided to mend their ways! They just did not realise the costs involved in running a household and admitted they had taken things for granted. I only wish I had done it much sooner, for their benefit and also mine! One daughter can only afford to give me $50 still and her older sister has increased her amount to $70. However, I think things around here are going to be very different from now on as my Sad Sallys strive to become more like Happy Hanna!

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.

As school has gone back, and exercise books need covering, I thought I'd share this money and time saving tip.

I bought a box of 100 plastic sleeves, just like the ones you clip into ring binders. These cost me just $1.50. I then cut off the spine and the bottom of each sleeve, leaving me with a piece of plastic that is the perfect size for covering exercise books. The spine of the book fits and holds neatly in the crease, and the overhang is the perfect width for folding over the edge and sticking down. So simple, and at $1.50 to cover 100 books, so economical too.

For an outlay of $65 I purchased chemical-free ingredients to make shampoo, baby bubble bath, moisturiser, hand wash and washing liquid. I made 500ml shampoo, a litre of washing liquid, a litre of hand wash, a litre of beautiful light moisturiser and 500ml baby shampoo and bubble bath. All I added were essential oils and water to the ingredients and I still have enough ingredients to make several more litres of any product.

My next outlay for a further $50 was for packaging; containers and tubes to make shampoos, moisturisers and lip balms for Christmas gifts. I have saved myself a small fortune. There are several good websites offering these products, however, I found 'Aussie Soap Supplies' the best, which offers recipes as well. http://www.aussiesoapsupplies.com.au/

Save on trips to the shops during a chocolate craving, with the most dangerous chocolate cake recipe in the world! It’s called Five Minute Chocolate Mug Cake.

Ingredients:
4 tbsp flour
4 tbsp sugar
2 tbsp cocoa
1 egg
3 tbsp milk
3 tbsp oil
3 tbsp chocolate chips (optional)
Small splash of vanilla extract

Method:
Add dry ingredients to a large coffee mug, and mix well. Add the egg and mix thoroughly. Pour in the milk and oil and mix well. Add the chocolate chips, if using them, and vanilla extract and mix again. Put your mug in the microwave and cook for three minutes at 1000 watts. The cake will rise over the top of the mug, but don't be alarmed! Allow to cool a little, and tip onto a plate if desired. This can serve two if you want to feel slightly more virtuous.

And why is this the most dangerous chocolate cake recipe in the world? Because we are now only five minutes away from chocolate cake at any time of the day or night!

Going out of my way to present well to prospective landlords has really paid off for me. I recently had to find a new rental property and found that the open inspections where attracting many families at a time. Being a single mum of four, I knew I had my work cut out for me trying to get something over the two-parent families.

I decided I would write a covering letter as an introduction to the land agent/owners. I wrote about who we were and even what schools the kids went to, to show we were already established in the area, where I worked for the same reason. I got friends, my employer and my pastor to all write character references for me, which I copied and added with the letter. I also have a dog, which can be a problem so I got my then-current agent to write a reference for my dog too, which I also copied and added with the letter. I then attached these to the application, along with copies of my last four weeks' payslips and a payment summary from Centrelink.

The first house I applied for had more than 20 families and most of them were two-parent families. I added all the above mentioned stuff to my application and I was happy to receive a call the next day to say I was successful. I asked the agent if my letters and other details had helped and he told me that they had been the deciding factor. They liked that I had taken the extra step and cut out some of the work for them. They also appreciated that I had been so open with them. I would recommend this to anyone trying to rent a place. It takes only a little time and effort but could be just what you need to secure a house!

Hard glasses cases are a great, cheap storage solution. I was looking for something to carry my make-up in for the holidays and my old hard case was perfect. It fitted everything I needed and the hard cover prevented any breakages. You also avoid the hassle of tipping out a soft make-up bag to find what you need! I then put the loose things in my glove box (screwdriver, scissors and pen) in another hard case and made myself a travelling tool kit. You could use them to store miniature sewing kits when travelling and much more. These cases are cheap to buy in second hand shops, and many are nicely decorated or you could do this yourself.

Over the past four years I have been fighting my way out of debt. I was left with a large amount of debt when my marriage ended and it seemed I would never find a way out, working nights to support myself and five children and trying to reduce the debt in some way. Then, instead of just reading Simple Savings I began implementing as much of it as I could. Along the way I found that things I previously thought were impossible are just every day now!

Two of my children have now left home and are independent and I have three daughters still living with me. I have found new ways to feed them and where once they would have baulked if I offered them home-made soup after school, they now eat it with relish. A home-made frappe was dessert last night and they were happy and satisfied with that. Fruit jellies, home-made scrolls and calzone along with the batch of cake and muffins or bikkies I make are average snacks and lunches. School lunch today was home-made soup with home-made pizza scrolls. It certainly took a while to change their views from believing that everything had to be store bought and chips were the afternoon snack.

I am now debt free and have savings - something I never thought I would have! Bulk toilet paper, bulk washing powder, skim milk powder, and bulk meat buys at a discount butcher and fruit from the growers has saved me a small fortune.

I recently moved in with my partner to his home with the girls and together we have been able to make more and more changes which once would have not been thought possible but with small steps we have cut out television unless it is a special documentary or one of the two shows per week we deem suitable. The girls now play outside or garden, or read and do homework after school instead of being glued to the 'box' and they haven't asked to play Nintendo for weeks now. Water or weak cordial is the staple drink, with the occasional juice for a treat.

I am now a stay at home mum and as long as I can feed this family, pay for petrol in my car and keep the girls clothed for under $500 per fortnight it will stay that way. I am working hard to make sure these dreams come true.

In reality there is no sacrifice - you just need to know what you want and aim for it every day.

I pay myself to exercise! Now, you may wonder how that actually saves me money. Because my exercise is free, usually walking with a friend or working out to DVDs I've received as gifts, I don’t have to buy expensive exercise clothes or pay for a gym membership. And paying myself to exercise? That gives me motivation. I started with $1.00 for every day I exercised, and increased it to $2.00 a day - still cheaper per week than a single exercise class or gym membership! I wait until I have enough money for a facial or massage, and treat myself.

I find that the end goal of some pampering really works as an incentive to keep exercising. Prior to this, I never let myself splurge on those sort of things. I am now happier, healthier and far more relaxed!