I have saved heaps by no longer buying expensive cleaning products. To clean my toilet, bath or shower, I quickly wet the area and let most of the water drain away. I then sprinkle the whole area with bicarbonate soda, using a small shaker (you can get them at Kmart for a few dollars). I then spray it with cheap white vinegar in a spray bottle. There is a slight chemical reaction that dissolves all the mould and dirt. Leave it for a few minutes to work. You still have to scrub a little and you may need to re-do any heavily soiled areas. It also works for benchtops and sinks, it's a cheap alternative to chemicals and good for the environment too.

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!

I grow most of our vegetables to eat healthy and save money. I save all scraps to compost and I wanted a tumble composter. They turn lawn clippings and scraps into compost in 14 to 21 days. The composter is priced at $410. I bought a 240 litre plastic drum (cherry bin) from the local trash and treasure market for $5.00. My husband drilled holes in the lid. It doesn't have a frame but I roll it on the lawn for five rotations once a day and I make compost in 21 days. It isn't hard to roll but I can't empty it into a wheel barrow (I'm only five feet tall) so I spread a sheet of plastic on the lawn and tip it out onto that. The compost is fantastic.

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!

My kids love doing things on Saturdays but even a trip to the movies for our family costs $70. So I invented '$20 Saturday'. We could go anywhere and do anything as long as it didn't cost more than $20 for the whole day. One Saturday each month we would find a spot in the street directory that looked interesting and take a picnic, other times we visited free places such as museums or community festivals and the $20 bought a drink, small snack or ice cream. Not every place was terrific but we gave each place or activity a score to rate whether we would like to do it again. My boys talk fondly of things we did together and places we visited on $20 Saturdays and they learn that you don't have to spend up big to have fun.

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.

This Christmas, I have saved myself over $1000 on buying gifts AND was able to afford a holiday for two to Queensland, just by using my green thumbs!

Instead of spending $50 on each Christmas present this year, I decided to use up some of my left over garden pots. I wrote a list of all who would receive presents this year and allocated a pot for each person (I also set aside five extra pots for those last minute gifts).

I thought about each person and what might compliment them, then I set to work! My garden is full of herbs, so I took cuttings from each herb and began growing them in their new pot for their new owner. I gave them plenty of time to settle in by Christmas.

When it comes time to give these lovely potted herbs as gifts, I also attach a recipe, so the recipient knows how they can incorporate their new plant into their cooking, or make up a lovely hand cream or bath bomb.

If you have herbs of your own and pots sitting around it's a great way to put them to good use. These lovely gifts didn't cost me a cent! I already had the herbs in my garden, the pots in my shed and instead of buying extra potting mix, I used soil from the garden that the plant was already used to growing in!

I created a storage system in my home office that cost next to nothing!

I stacked four white planks, one on top of the other, supported in between by two house bricks at either end. The bricks are covered in bright red fabric to stop scratches and to blend in with the office décor. Instead of buying cane baskets from Spotlight at $22 each, my 20 filing baskets are black mushroom boxes, free from the supermarket. These boxes are strong and sturdy and the perfect size for A4 papers; they even have handle slots, so the boxes can be pulled out easily. I stuck large labels on the front of each box indicating what is inside, and my invoices, accounts, bank statements and so on are now readily at hand.

My storage system is a great time saver, the red/white/black colour scheme looks great and it cost nothing except for the MDF planks which Bunnings cut to size to fit my space. I saved over $400 on the baskets alone!

Pleased with how well this worked, I did a similar thing in my craft room, to store and organize all my sewing, patchwork fabrics - immediately visible when the box is pulled out – knitting wools, card making paper and supplies. I covered the boxes in pretty pink wallpaper off cuts bought for a few dollars from a garage sale. Same story in the kids' playroom, where their storage shelves acts as a room divider. The kids have painted crazy designs on the boxes, which hold colouring pens and pencils, card, paper, scissors and toys. The kids are allowed to pull out only one box out at a time, so the toys are always cleaned up and put away before the next one can be pulled out.

Simple, cheap as chips and such a stylish way to stay organized!

My husband was dying of lung cancer. He wanted his ashes scattered at sea and, being a practical man, discussed other details. He did not think much of church services and a eulogy delivered by a person he did not know.

He died in my arms at home and the next morning he was picked up by Sommerville Funerals. (Most people are unaware that they may have some time with their loved one before the body is collected.) A private cremation was arranged and I collected my husband's ashes for his 'celebration of life' at our home. All our friends arrived, charged their glasses, sat or stood on our front lawn and listened to his story that I had written a few days before. We played his favourite music and people stayed all day. My husband loved a great party and this was no exception. Everyone said this was the best service they had ever attended and they were going to do the same.

Incidentally, the only cost was the private cremation fee. Nothing like some of the very high fees I was quoted.

This simple tip saves money on toilet cleaners and air fresheners! A cheap and easy way to keep the toilet clean and smelling fresh is to make your own antibacterial spray. I have a spray bottle on the window sill filled with water and a few drops of tea tree oil. After each flush, we spray two or three squirts in the toilet bowl and close the lid. It keeps the room smelling lovely and our toilet sparkling clean without yucky chemicals.