I carry fruit pouches called "GoGo Squeeze" they're about $3 for a package of 4 and come in different fruit mix varieties, favorite is Apple-Mango-Pineapple. Do an internet search for them, I have at least one of those a day as a snack. They're also customs friendly, and will not spoil on a trip. I think it's a good choice. Chipotle and those type places have vegetarian options so I usually go for that sometimes.