I wourk in a daycare and we provide a microwave to heat the childs food until they are a year old. After that any hot lunches need to be brought in a thermos or pack a cold lunch. You can keep hot dogs hot in a thermos by boiling them and placing the hot water in the thermos with the hot dog. You can heat macaroni and cheese, beefaroni, spaghetti. Chicken nuggets, pizza, french toast, that sort of thing won't stay hot. For cold lunches you can do sandwiches, fruit, yogurt, cheese, ham, even peas are good cold. jello, pudding, cereal with milk on the side, cold chicken with ketchup packets, lunchables are always good and easy. Hope this helps. P.