Easy picnic pick-up-and-go food ideas?

Basically, a good friend of mine wants to have a picnic for the beginning of summer. We're going to have at least 17 people attending, and 33 at most. (I know, it's a sucky estimate.) I want to bring something that people can just pick up and eat, but I want it to be different, too. So not like, chocolate chip cookies or brownies. Possibly banana nut bread or something?