How about sports themed prizes? Not everybody enjoys football, (or even agrees on what it is!) so how horribly divisive of someone to offer season tickets as a prize for a raffle, eh? Or you could just sell it off later to someone who values it more.
Perhaps we need to be more accepting, individually, of the joys of others which we do not share. Even if you don't drink yeast are easy, fun, and rewarding pets: perhaps the brewers' discussions need more microbiology geekery.