I am gonna put in an endorsement for Lil Lisa's site, http://www.wecamphere.com/blog/ She has some awesome camping recipes and more importantly cocktail recipes in her blog!
Grilled chicken ... marinate it for 24 hours in some white wine and spices. Grilled steak ... also marinate it. Grilled corn ... grilled squash/zucchini/asparagus/onions ...any vegetable is great on the grill!