how funny! I just played BUNKO for the first time the other night (I was a sub for a well-established group).
Anyway, I would consider a sandwich and wrap tray. It's a great way to give your guests variety, without utterly slaving away in the kitchen. Roast beef and tuna sanwiches, grilled chicken and veggie wraps should offer something to everyone.
For snacks on the table (there were snacks on every table as we rotated) I found it hard to resist them , and was frustrated that it was all crap (candy corn, etc.) I think veggies, pita and hummus, and a fruit tray (along with the pure crap) would have gone a long way with me. I could have snacked, without feeling icky afterwards.
There's always a reason to bake.