We're waiting on some new artwork to come in, so in the meantime I whipped up a quick badge for people to use at ACP group photos/gatherings:
The standard size one can be found at http://www.acparadise.com/badges/2k5badge.jpg
If you print it out at a resolution of 300 dpi, it will come out to a comfortable 4" x 3" size which should fit in a typical badgeholder, or you can laminate it.
Should you want to do your own re-sizing the full size one can be found at http://www.acparadise.com/badges/2k5badgelarge.jpg
For a sideways version:
http://www.acparadise.com/badges/2k5badgelandscape.jpg
Say you wanted it wallet size, just make it 3" x 2.2" (although I don't know how people are going to find you if it's hiding in your wallet)