I'm in Secular Alliance, Queers and Associates, my school's circus club, massage, and our BDSM club. There are a few others that I go to when I can, but those are the main ones.
I second BrassLion's advice. Also, look at all the clubs ones that seem interesting, and sign up for their listhost as a reminder to go to them.
and our BDSM club
Wow, that must be interesting.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.