I checked 'lanyard' due to the fact that there seem to be quite a few INGO events...one recent one where members were asking for the old sticky name tags. An INGO lanyard would enable members to print out their avatars and screen names and add their real name as to be identifiable to fellow INGOers at said events...
How about a spoof on the "Colts fan" t-shirt or sports jersey?
"Indiana Colts fan"
on a shirt that is kind of a hybrid of a shooting sport shirt and a football jersey.
Number 1911 (or 19 on front and 11 on back) or number 15.
At a quick glance would look like a typical shirt you could get at the gift shop but is obviously a colts gun shirt.???