You know that Halloween game where you have everyone close their eyes, and you pass around food and things and say that they're body parts? (For example, dried apricot is an ear, spaghetti is intestines, grapes are eyes, etc.) You could do something along those lines... There's a game that goes along with that that I'm sure you can find through Google I'd look but I have to leave for school now.
Tell us what you end up doing!