How to do you keep it warm? Or do you just have them eat it cold? LO starts preschool/nursery school in the Fall and I will have to pack food for him for the first time. His previous daycare provided all the food. Not looking forward to this. I know he will eat mini meatballs, sausage, hotdogs, chicken nuggets, etc, if I pack them, but how to you keep them at a safe temp?