http://www.koldtogo.com/images/87CCl...sulatedBag.jpg Like this
1. Whipped cream, you whip up some cream, you can fold in protein mix for added protein or sugar free jello for flavoring alone. You throw that in the freezer over night into a ziplock back or another container. If you have an insulated bag, you an keep it cold for a while.
2. If you go on google type in "Low carb soup cream of" you'll get alot of hits, you can make the soup, heat it up before going to school, put the soup in a thermos, have hot soup for a few hours. High fat, low carb, whatever protein content you like with the chicken.
3. If you make up some steak before you get to school, put it in a small container, then in an insulated bag, you can keep the steak or meat hotter longer. How long it stays hot depends on the size of the bag and how many times you open it and close it.