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You could get a cheap cooler, and put a frozen ice pack in it, to keep some food cool. Cook on weekends, get up early and do some hamburger helper, casseroles, or something healthier. Then put some stuff into containers, and you’re good for a few meals.

If you really crave something hot, you can get travel cups that you can plug into your car to heat up water. And all you need is a cup of hot water to stir in a can of condensed soup, or heat up some stew straight from the can. Manual can opener, a soup spoon, and you’re away and running.