I have far too many general quirks to even think of listing them, but when it comes to food I am not very picky and have an interest in trying new and different things. That said:
Temperature.
Hot things need to stay hot until finished, preheat the plate please.
Cold needs to stay cold, a cold drink requires an ice cube.
Etc..
The exception to this (you knew there would be one) is ice cream. Room temp bowl then microwave 9-11 seconds depending on serving size to get the right consistency. Go figure.
Oh, and toothpaste; rolled from the bottom 1cm deep roll held that way with a black binder clip 3cm wide.