Easy-cheesy: Get a roll of toilet paper and tell everyone that the TP supply is low and they need to take as much as they'll need for the 12 hours that day. Pass the TP around, and when everyone has theirs, make them tell 1 fact about themselves for each square they took. You can choose to have mercy on those who took a gigantic wad and let them do 2 at a time or something. You could also have people stand if they have a fact in common with whoever is reciting their facts.

We did the PostSecret one last year when we had a Chapter Development Consultant come visit. It was very cool to hear some of the secrets my sisters have!

I LOVE the three random facts idea!!! I've already forwarded it to our chapter president and am hoping we can use it at some point. I also sent her the TP idea, which I'm hoping might be a good one to use when our entire chapter is living in our sorority house for the next three days! :D