I think the Ferret Company's convict T-shirt is about the best,
http://www.ferretcompany.com/content/main04index.html
 
but also check out
 
Ferrets Anonymous
http://www.ferretsanonymous.com/merchandise.html
 
Ferretware
http://www.ferretware.com/content/jewelry.html
(scroll down past the jewelry to the clothing section)
 
A purchase from any one (or all) of these will help ferret legalization
and/or rescue in California.
 
--
The Beach Boyz*
Surf on over to http://Beach_Boyz.go.cc
 
Californians for Ferret Legalization http://www.ferretnews.org
CFL Wanted Poster:  http://ferrets.go.cc
[Posted in FML issue 3433]