This is totally random but I could use some ideas.

I'm picking up a close friend from the airport tonight as she gets back from chaperoning a school trip abroad. There are 20ish kids and teachers in her group, and I'd like to bring some kind of food / snacks for them because they will have been traveling all day long and most still need to take another hour bus trip once they get to the airport late tonight.

If you had been in another country for a week and were returning to the US after a long tiring day, what kind of food / snacks would you love if someone brought you?