We talked about this in the official QuakeCon thread amongst us members that are going, and Craig suggested that I ask members that aren't going about it.
What the idea was is to make official sR T-shirts. I happen to personally know a guy that does screen printing and embroidery. He puts my company name on my work shirts and I fix his computers. His son is also good friends with me (some of you 2142 players know him as bluef100).
So here's the deal, screen printing requires a pretty good sized minimum order due to the cost of creating the screen. The shirts should cost no more than $20. And will have a genuine screen-printed logo on them. Not the crappy iron-on that cafepress uses. I'd tell you what the shirts would look like but I'm waiting on DanFortH to get me the artwork
So please, in this thread post your desired shirt size and how many you want (the more we order the cheaper the shirts will be). If you want your name on it that can be done as well, but I don't know how much my friend (he does Vinyl lettering) will charge for this service. I'll update this thread as I get more information.
Oh yeah, and Craig's already signed off on this idea in the QuakeCon thread.