I never really make a list. These are things that come to mind though:
Some sort of fruit (mostly bananas or golden apples)
Some sort of vegetable (commonly some stuff to make salad or an avocado)
LOTS of TV Dinners and frozen goods
LOTS of Ramen
Various canned food (soup, chef boy RD ETC)
Lots of juice
Whatever condiments or necessities I'm out of (toothpaste or shampoo for necessities).
Maybe a treat if it's on sale.
I usually live off of 40-$60 a week. I think I do good.