You've probably seen the 'Celebrate Diversity' shirts that show a lot of different handguns (I think I've seen one that is just a page full of different 1911s)...
What about a 'Celebrate Diversity' shirt that shows all the gun makers?
I mean photos of Samuel Colt, Eugene Stoner, Gaston Glock, Mr. Smith, Mr. Wesson, John Moses Browning, Mr. Kalashnikov, Mr. Garand, etc.
I haven't looked around to see if this idea's been implemented yet or what photos are available of these guys, but it seems like it might be a nice subtle shirt to show your enthusiasm for the great gunsmithing geniuses and their designs.
I might play with some designs when I wake up tonight, but I wanted to throw the idea itself out there to see what people think and who people think should be on the shirt.