Food on the go..

Can anyone recommend foods that are healthy and on the go? We have a pretty long road trip ahead with our 2 y.os and don't want them to eat fast foods the whole trip. Something at least a little bit healthy that I don't have to worry about keeping cold or heating up.. lunch, dinner and snack items, breakfast will be at the hotels.😊 TIA

*They don't eat in their car seat.