Sig contests are always fun, and don't take too much organization. Granted, they only encompass a small portion of the forum, but they're the easiest to set up. Maybe I'll get one going sometime soon, since there isn't much else on the horizon.

In terms of a broader contest though, I was thinking that with the return of Naruto to manga storyline and the subsequent flocking of new people to the forum, it would be neat to have a newbies-only contest. So for instance, you'd only be able to participate in the contest if you had less than 50 posts or had been a member for less than 3 months or something like that. I've already sketched out some wicked Naruto-themed knitting patterns that I could make as contest prizes. I think it would be a neat way to involve more new people in the community, without them feeling intimidated by competing against older members.