Everyone had to dress the part and bring a 'white trash' dish to share. I struggled with that part. I don't like many processed foods, particularly processed meats and don't do much packaged food.
I put a plea for ideas/help out on Facebook and was overwhelmed (in a good way) at the responses. The suggestions ranged from 'Easy Cheeze' (the stuff in a can), to Spam, to fried chicken, to potato chip casseroles, to jello molds/salad and even things like chitlins and tripe. I ended up taking my cousin's idea and bringing the components for Frito Pie. (Homemade chili though, not the canned stuff. I just couldn't bring myself to go that far).
I also was perusing Foodgawker and came across this fabulous blog post featuring 'Gourmet Potato Chips' - potato chips painted with caramel, then dipped and chocolate and finally sprinkled with bits of Heath Bar.