When out on the road for a day trip, or a small weekend get-a-way with the kids, bring along a portable food warmer to enjoy a hot meal when you stop at a public rest spot for lunch or dinner, or while staying over-night at the family cabin. Just remember that it may take a while for the food warmer to get things warm so you may want to plan your warming up time a little in advance.
Portable food warmers:
Portable food warmer pictured: Wagan 2260 Thermo-Electric Fridge/Warmer – 6L Capacity
Some of these have a strap that can be slung over your shoulder for easy transport.