Bring food, we're probably going to have a BBQ or at the very least a picnic

also any kind of game you'd like to play, any sports equipment, etc. Music also! Bring your pokemon games so we can play each other, trade, and just generally nerd it up. You can also bring the Misses
Now that I have internet again I'm going to refine this topic and gather up the list of who is coming for sure and the maybe's. I'll also begin a list of things we need and who is bringing what. So at this point you have first pick on what you want to bring!
As for T-shirts, thats a great idea! Blade came up with the name TPMfest 2011 which I kinda like, but I'm open to suggestions too. Once we have that I'll toss it to Ben and get him to use his Graphic Arts degree to design us a logo, then toss that to Sarah so she can work her magic and make some shirts ;D
(Oh yes and bring a camera ;D)