If you have a deep fryer, wings are always a hit at a Bills tailgate. Last year for the Pats night game we did a full thanksgiving feast with not only deep fried turkey but mashed potatoes, stuffing, etc. the works. You don't always have to be elaborate either, sometimes you just gotta find simple things that are delicious. At one game we cooked up some bacon and threw it on our cheeseburgers and had some really good rolls, stuff like that is cheap, easy, and perfect for a tailgate party.