Maybe anyone who's coming that has a pafoa shirt could wear that? I don't have one myself, but if enough do, it could show some uniformity, along with the name tag idea. Unfortunately I am not artistic by any means either.
heres my try from here would be $51.50 for 50 buttons:
http://www.zazzle.com/cr/design/pt-b...tton&size=2.25