As a mother of 3 boys, that would be a deal breaker for me.
BUT if you insist.
they sell frozen pancakes, waffles, english muffins, muffins, eggs ( boiled, or scrambled, omlet)
can be cooked and stored in container and nuked,
Sausages can be warmed up, and cereal, pre-cut fruits in tupperware are easy and great. brakfast bars, granola bars,
GRilled cheese , chicken nuggets are fine at room temperature, grilled panini ( basically a grilled cheese with some turkey or cold cut) cheese cubes, and fresh fruits cut up, with cold cuts rolled up- , peanutbutter and jelly, fluffernutters, choclate and bread ( nutella), yougurt and fruits, cottage cheese with fruit, hotdogs are fine at room temp with a little ketchup, chicken bits ( breast cut up) with salad dressing. Chips, crackers, cookies, raisins, apricots dried, granola
Want somemore ideas