Make every cake of soap last twice as long

To make a cake of soap last twice as long, simply paint the top or bottom with some PVA wood glue and let dry. Doing this means only one side of the soap dissolves, enabling the cake to last double the time. I paint the top side of the cakes of soap when we bring them home. Sometimes my granddaughter even glues a pretty picture to the side!

Lock in fuel savings and make them last!

Our household has found a super easy way to make the most of cheap fuel prices. We watch the fuel cycles with the ACCC petrol price cycles website (https://www.accc.gov.au/consumers/petrol-diesel-lpg/petrol-price-cycles). When it is getting to the lowest point of the cycle, as well as our vehicle, we also fill up five 20 litre fuel containers. If it is inconvenient to do so, we prepay and lock in the fuel price on both of our phones on the 7/11 app. This guarantees that locked price for seven days. We then use that fuel through the next 3-4 weeks (the length of the fuel cycle generally). It's like having our own petrol station at home!

Fuel containers cost around $20-$25 at BCF and the savings per cycle paid for each container. Now it's pure savings of $30 per cycle. Petrol works out around $520 per year less for us, for very little effort! At first, my husband was concerned that the fuel may not last (he is a qualified mechanic), but I showed him some tests BP had done on this matter, finding that six months later, the values were still the same. We notice zero difference in fuel consumption, km/L, or parts wearing out any faster.

Everyone we tell thinks this is an amazing idea, we find it strange that no one else seems to have thought of it!

'Grandma's Day' saves $30 a week on groceries

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!

Doona dollar saver

Instead of paying for one expensive doona, and the dry cleaning costs that come with it, buy two or three cheap doonas, pin them together at the corners, and put them into the same doona cover.

Because cheap doonas are thinner, you can wash them one at a time in your washing machine, and you can also adjust the warmth. When the weather starts getting warmer, just take one doona out of the cover and put it away in the cupboard.