Hi Brandy, all the things you already mentioned, plus I am really focusing on using my leftovers. If possible, I'll turn something into a soup, one of my favorite ways to eat anything. Plus, multi-purposing food items. I.E., I recently bought a couple marked down bone-in chicken breasts. I used the white meat for oven baked chicken Parmesan and the bones and skin for soup. So for about $2.50 I got at least two big meals. (really more like four...but this is a one-person household).
Some time ago I made up some meatballs. Frankly, they were a little tough, but they will be great in a slow simmered beef veggie soup.
I'm always thinking about how I can do more than one thing with any food item. Right now I've got some cold chicken in the fridge. The original meal was chicken tenders, baked potato and green been casserole. Now I'm thinking the leftover chicken will be great in fried rice with green onions, thinly sliced carrots, a handful of frozen peas and a touch of soy sauce.
I grind old bread into crumbs, I cut away nasty pieces from vegetables in the crisper...anything to extend the life and usefulness of my groceries.
There are other things, but it's someone else's turn now.