Favorite Lazy Meal Preps

I’m chronically ill and dealing with some dietary issues that mean I basically have to meal prep everything (including snacks). My old go-to lazy meal prep was salad, but since my body is violently rejecting that I need a replacement. What are some of your favorite low effort meal preps?

(If anyone’s wondering, my specific mix of issues is gluten free, low FODMAP, and low residue with a bunch of giant mystery issues thrown in. That being said I’m pretty good at recipe modding so I’ll take any ideas. I just need some jumping off points.)