I can remember making long car trips with my kids back in the days before portable electronics. You had to think up all kinds of things to keep them from getting cranky. We often played a game called Ten Questions. One of my favorite things to ask them was this. If you had to eat only one food item for the rest of your life, what would it be?
One always hoped they would say something like pizza or tacos or sub sandwiches or something that could contain a reasonable variety of food groups... to...well, keep you nourished. Their answer was often cookies.