Fussychica has hit it spot on. No new adult clothes except underwear and shoes, and those only when you do not have an appropriate pair for work or walking. Clothes only to replace those you have when they are getting worn, IF you actually use the item. Bet you don't.
makeup - not really needed, but if you must ONLY when the old stuff has run out. Imagine it is WWII and look up ways of making the stuff last. All toiletries are the same so shop around.
anyone on a budget should not be buying or using: perfume, downloads, Sky, (there is enough telly for everyone on freeview) gym subscriptions (open front door, pass through it - free exercise), magazines, books (libraries are WONDERFUL), any mobile phone except a budget simple PAYG job that does calls and texts (internet access at home or work is plenty, you do NOT need it on the move!), savings stamps/schemes (the money goes into an account, even at current pitiful interest rates). Plus the obvious wasters like lottery tickets, takeaway coffees, bottled water.
kids toys and books - to the charity shop. They are CHOCKFUL at the moment!
if you throw away any food except peelings you are wasteful. Put less on the kids' plates; if they want more they can have more, but most children leave half what you give them. If it hasn't hit the plate it can be saved for later. A freezer, a slow cooker and a microwave are your best pals. (I have shamefully only recently discovered you can freeze bread and milk, so stock up on decent seeded wholemeal at Tesco at between 89p-99p a loaf rather than £1.50 at the others)
heating down a bit, hot water when needed only, laundry according to weather if possible (tricky at the moment but there is no need to use the tumble dryer from April to October if you have any outside space)
hours of fun. :-)