We did the "meat head" one year, though we used jello jigglers as the first layer to hold the meat. It was a big hit and something some people remembered (as being really disgusting)

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I usually have a "jello hand" and just some really easy but hearty snacks as I don't want to be doing a lot of cooking before the party. Sausage balls are yummy and look pretty gross too - and I have some of my friends bring appetizers to help.
I usually have some non drinkers at the party so I do try to have a non alcoholic punch - but I do use the "frozen hand" in the punch ( a rubber glove filled with colored water or juice).
Madame Pleather