Hrm, apparently you do have concrete suggestions, that convinced me that I wouldn't be able to survive on paleo-diet for 12 hours :( How strict are the paleo-friendly rules? If they're really strict, I can just grab something to eat before coming, otherwise, I'll bring something nice and tasty...
There are no strict rules at all :-). I strongly encourage that food brought to share with the group be paleo-friendly, but you can do whatever, and certainly you can eat whatever you want yourself.
Shannon and I are going to be hosting South Bay Less Wrong meetups at the Tortuga community in Mountain View on Thursday nights starting at 7. Come prepared to reveal something you're consistently irrational about. We'll spend some time throwing ideas around and then hang out and mingle.
Bringing paleo-friendly food is a bonus but not required.
If you'd like to come, request an invitation from our google group, Tortuga Rationalists.