For long term snacks, ie not hot food you just cooked, I keep some type of chocolat bar, current One Grands minis, some M&Ms, jolly ranchers for the sweet tooth, and skittles too.
Microwave popcorn, snack crackers and/or ceral for snacking as well.
Diet Sodas in the mini-fridge, though I sometimes keep a variety of regular ones too.
Of course my HT is no where near a proper kitchen so runs to the real oven are a pain in the butt. You have to go on hunter-gatherer trips and then return "home" for a hunker down.
