If you use a lot of herbs and tomatoes, and have a garden, consider planting some. Last year we did this, and we were inundated with them due to the warm weather. It was so easy too.
I freeze everything that I can. I buy a loaf, cut it in half, and freeze it and take out as needed. Any excess berries, bananas are frozen for baking. I had a lot of fruit not being eaten and we took a cobbler recipe of Jamie Olivers and now we use it with any fruit that is left over. Delicious!
Pack lunches for work, I use up what needs to be gone and chuck it in a salad.
I never buy coffees, unless meeting a friend.
Watch your stock control. Do you really need a stash of toilet rolls, toilet cleaner, washing up liquid? It's money sitting in your cupboards.
Sell everything you don't want on Vinted and eBay. Look on these sites too before you buy something. I have found lots of things new with tags on these.
Don't spend lots of money on work clothes. I don't wear a uniform, but I do have to dress a certain way. I don't have a top job like a lawyer, so don't need to look uber professional. I only buy my work tops from charity shops, and trousers/ skirts from H&M using the £5 recycling vouchers they give out for 5 pieces dropped in (things I can't sell).
There are things that I won't spend money on; coffees, mani/pedi's, a lot of meals out, takeaways, makeup, clothes that I don't need, but then I'll spend a lot on other things and feel no guilt about it e.g. skin care, a bag, travel.
For me, it is more about not wasting money, so I can have the things that mean a lot to me.