If I'm on the trail for an extended period of time I'll pack a cooler of water and soft drinks, but I'll get a couple of bags of beef jerky. You can find locally made beef jerky from small farms around Georgia in most gas stations around here, and it beats the snot out of Jack Links or any big name brand.
Fried peanuts are good also. You can also find those in most gas stations around here. They have regular salted and garlic. The garlic are the best, and when you fry peanuts the shells become so soft that you can easily eat them.
If we are camping, I have a tiny charcoal grill a friend of mine made out of an old air tank, and I will take tin foil, frozen shrimp, lemon, salt, pepper, olive oil, garlic, and tequila and make "flame broiled" tequila lemon shrimp. God its good