I have a strong bag cooler. I pack all my breakfast and lunches in there for the whole trip plus snacks. I eat one meal a day out for something to do. In that bag I can fit my documents, flashlight, iPad and headset as well as other smaller items. It sits up front with me.
Some guys can fit all their meals in there. It’s up to you what you want to do/eat on the road. The bag paid for itself in a week from. It eating airport food. That and I eat every few hrs so it’s a pain to constantly be worried about food. (I’ll delay a flight for food)