Replying to Spring Break Road Trip: What To Eat?

I'm making a trip from bozeman, MT to Vancouver and back, skiing along the way. I know whistler and other resorts would charge out the ass for food, and ill be in the car for days on end, so im looking for suggestions for food i can buy now to save money later. So far I've got:
Bagels
Almonds
fruit
Peanut butter (protien, what to dip with?)

must be able to cross the Canadian border, no fruit im guessing. Thanks NS!