Two years ago I toyed with the idea of driving down to the ScienceOnline conference, and in thinking about it, doing a t-shirt depicting the Borg and a semi-recognizeable caricature of the scienceblogs logo, which would have read “Assimilated” or “Not Assimilated,” depending on your affiliation or lack thereof. Alas, I forgot about the opening of registration and by the time I remembered, I was only able to be on standby and never got a chance to go. So I never drew it up.
Now, I think, there could (also) be a t-shirt that reads “I drank the Pepsi” or “I never drank the Pepsi.”
You could still use the first idea, only change it to Scientopia.
You should do it, at the very least ’cause it’ll give you an excuse to come hang out w/ all of us at the meeting!