Pre-cut veggies. Don't be a lazy bum, do it yourself and save some cash.
"Zero carb" or "zero calorie" foods. What the hell are you spending your money on that shit for? It's not going to fuel you, and zero-calorie foods taste like shit. Stop it.
"All natural" products that are anything but. Look at the ingredients. If you see all kinds of stuff you can't pronounce, it's probably not "all natural".
Stuff you could easily make at home.