We usually do breakfast in the room. It's the easiest one I think. We usually have cereal, milk, yogurt, hard boiled eggs, and fruit. Lunch you could get lunch meat, cheese, and bread or do tuna fish or egg salad sandwiches. You could also order enough pizza to have leftovers. PB&J sandwiches are easy for breakfast or lunch. You could also do like a Lunchable for lunch with crackers, peanut butter, and cut up lunch meat or pepperoni. Hummus and veggies are easy too. Heck, you could let your kids have cereal for lunch. If it's healthy enough for breakfast, it's probably fine for lunch. I know DS likes to have breakfast at lunch sometimes. It feels like a treat to him. You might be able to make grilled cheese sandwiches with the iron in the room

That last one was a joke. Please don't do that