I need to take an appetizer to a cookout with the knitting group at my church. Twenty women, ranging in age from 35 (me!) to probably around 75. I want to take something that everyone will enjoy, but I'm not sure what that would be. Ideally, I'd like to make something that could be prepared the night before, but if it's quick and easy I could probably manage to do it right before the cookout (while juggling a 3 year old and an infant). It needs only needs to travel about a mile, so either warm or cold apps would be fine. Any suggestions?