Little things do make a difference I think.
I cut up scour pads and use half at a time, I use half the amount of washing gel they recommend-clothes still come out clean, ditto fabric conditioner, I use basic /cheap dishwasher tabs, eg 30 for under £2- I’ve had finish etc before and there really is no difference on how clean the dishes are! I wash jay cloths and reuse( may be obvious but I know a lot of people who use once then throw away) I use a vanish soap bar for stains, rather than these expensive vanish powders that you add to a wash, bar is about £2 and lasts the yr at least. I use dettol liquid (supermarket cheap 35p version in with towels and jay cloths etc instead of the fancy dettol washing liquid.
I Try not to buy food and drink out, I can’t condone the waste of money! Mostly it’s a disappointment anyway so try to keep that in mind and plan trips out around lunches/teatimes to reduce the temptations, one meal for our family at hungry horse last year cost over £100! I didn’t enjoy it as I was wincing inside thinking about how that’s nearly a weeks food shop!
I usually try and keep a few soft drinks/ snacks in the car to give the kids if they’re hangry.
I try and plan car journeys depending on what I need to get done, in any given week and do stuff on the way back from the school run etc so I’m not in and out in the car all the time.
I always change my insurances every year to get the cheapest deal.
I turn my heating off at night once everyone’s tucked up and asleep.
I carboot/fb/eBay anything we don’t need anymore, I also have become the dumping point for family, so anything I’m not keeping goes to charity or sold.
I scour charity shops when I’m in town for anything that might be worth selling on, in the summer it’s car boots and half and half of things to sell on and finding stuff to furnish etc the house or stuff we or the kids need, I hate buying stuff new (except the obvious underwear/personal hygiene items etc!)