Three weeks ago we ended up without a cent to spend on groceries and the money situation for the following week was only slightly better. We had to eat, of course, so I raided the pantry and freezer and managed to get by on what we had. We were also running out of laundry powder and toilet paper so I rationed out these things to make sure we made it through until we could afford to stock up. It meant using less laundry powder per wash and a few less squares of toilet paper each visit, but we got through the week without having to buy anything, saving around $300.

The following week we had only $30 for food shopping. I still had things I could use up in the pantry and fridge/freezer, and the rationing of the laundry powder and toilet paper meant we wouldn't need to buy more until the next week. So I spent our $30 surplus for that week on milk, fruit and vegetables.

Last week we were back to normal but my two weeks of poverty made me realise just how much money I can save each week by using less of everything and trying to use up what I already have in the fridge and pantry. Over two weeks I had managed to NOT spend about $570 and I had also cleared out a stack of canned beans, canned tuna and sardines, frozen vegetables, frozen meat and frozen loaves of bread that were taking up space in my pantry and freezer.

I'm saving money, time and sanity by serving dinner much earlier – here's how! With three young school children, I was finding they were coming home really hungry from school, eating up and were not hungry at dinner time. This meant I was struggling to find healthy, economical after school snacks and throwing away perfectly good dinners! The solution? I changed our dinner time to 3.30–4pm! They have a healthy, nutritious meal when they're hungry and a small snack such as fruit later in the evening. No wasted dinners, no stressed mummy! I have their dinner ready when they get home and then have more time to help them with homework. They are also helping out more with dishes and so on, which is a great help to me.

We have saved $500 a WEEK and I've got my life back again! My husband lost his job in October last year, just weeks after I had gone back to work part time to 'supplement' our household. At the time, we had over a dozen payments going out every week, and I really thought the solution was to work more in order to get more money. However, after 6 months of missing my two small children, and working 70-90 hours per WEEK, we made some wise, life-changing decisions. Firstly, we moved house, which automatically saved us $150 per week in rent. the house is further from town but, unbelievably, we now spend LESS per fortnight on fuel than we used to because instead of just jumping in the car now, we plan our trips. This alone gives us a $75 weekly saving. We finally finished paying off our car (another $100 per week), I took our children out of daycare to be the mum I wanted to be (another $50 per week), I on-sold our gym memberships ($26 per week), and we cleared up four other outstanding debts that had been hanging over our heads (totalling $2000) simply through recognising that I had to make the little money we had work for US, not vice versa, and that NEEDING LESS was more important than caramel lattes, trips to Mcdonalds and new clothes. (Oh, and now we have 3 weekly payments, rent, power and insurance- magic!)

My husband is still job searching, and I work 25 hours a week which is what we comfortably live on. I reduced our WEEKLY expenses by nearly $500, which is almost 50 odd hours per week that I no longer have to work. It is SO empowering, and even though we 'have' less, as a family, what we have gained is immeasurable.

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 can make hundreds of litres of liquid plant food from just $12 worth of Dynamic Lifter pellets! This will buy a 10kg bag. Just add around four handfuls of pellets to a nine litre bucket of water and let steep for a couple of days, mixing occasionally. When you have a nice 'tea', pour a couple of litres of the liquid, into a nine litre watering can, top up with water and give your garden a drink. Repeat until all the 'tea' is gone, then add more water to the residual at the bottom of the bucket and repeat this process. As the mixture gets weaker, you can use on seedlings, vegetables and more delicate plants such as azaleas and gardenias. The 'weak' mixture can be used as a health tonic or sprayed directly onto the foliage of plants (remember not to spray if the weather is over 20 degrees Celsius, as this will burn the foliage). Once you get to the real weak stuff, simply pour the residual under a tree and water in well.

You can also make hundreds of litres of liquid fertiliser from a 10kg bag of Blood and Bone pellets at an initial cost of approxiamtely $1.20 per kilo. Compared to a litre bottle of liquid plant food (such as Seasol) which costs about $10 and will make just over 300 nine litre buckets (going on the manufacturer's average of 30ml per bucket), your bag will make many hundreds of buckets of first grade solution followed by many more second and third grade 'weak' solutions which are ideal for foliar feeding. A huge saving, which will give you enough fertiliser to last you a whole year or more!

When my daughter started school last year, she had birthday after birthday to attend, which meant present after present. Last year, each present cost $25 to $35 and I couldn't afford to pay that much this year. So, I planned ahead!

Before every school year starts, Big W has a huge stationery sale, where I purchased the following:

• 100 writing books at just $0.01c each, total cost of $1.00
• 20 packs of 24 colouring pencils at $0.49c each, total cost of $9.80
• 10 twin packs of safety scissors at $0.49c each, total cost of $4.90
• Five eraser 4-packs at $0.99c each, total cost of $4.95
  - Five pencil sharpener 4-packs at $0.29c each, total cost of $1.45
  - Two 10-page sticker booklets with 150 stickers per page at $2.00 each, total cost of $4.00
  - Four sheets of contact paper in girl and boy themes at $0.99c each, total cost of $4.00.

Total for all this is just $30.10, and I'm able to make 20 presents! That's just over $1.50 per gift! At every birthday party, my daughter has presented the birthday girl or boy with the following gift:

• Three books covered in contact paper
• One pack of colouring pencils
• One pair of safety scissors
• One eraser
• One sharpener
• One page of stickers.

Both parents and children have loved this present because, unlike a toy they soon lose interest in, they can continue to use their imagination to create drawings.

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.

I make this vegetable pasta sauce for three reasons - it's cheap and healthy and it uses up leftover vegies (cooked and uncooked) so I save three times!

Whenever I serve up a dish of vegies for dinner (usually broccoli, carrots, beans and zucchini in my house) and it isn't all eaten, I put the leftovers in a ziplock bag and throw it in the freezer. Then, when my fresh vegies are starting to get to that 'oh dear' stage, I start cooking!

In a big pot, with a bit of olive oil, I fry onion and garlic and add all the 'oh dear' vegies - sometimes there is a fiddly bit of broccoli that is too small to use in a meal or carrots that are starting to wilt. Other vegies I have added include celery, cauliflower, broad beans, spinach, cabbage and capsicum. I chop and cook all of this - in summer I add fresh tomatoes, in winter I throw in a couple of cans of Home Brand tinned tomatoes. To this I add the frozen leftover vegies, a squeezie stock concentrate or stock cube and some water.

I cook the whole lot until everything is soft, and then I blitz it in a food processor or with a Bamix until it looks like pasta sauce. I then freeze this in meal-size portions and use it for everything - I add it to mince for bolognese, or just use it neat. My kids don't know it's full of vegies - they just think it's another jar of commercial pasta sauce!