What about grill badges?

[mit-eddie!ucscc.UCSC.EDU!red4est!lrc@EDDIE.MIT.EDU (Larry Colen - Nerd in a black leather jacket)]

When our LBCs were contemporary, it was apparently quite in vogue
to have a grill badge proclaiming which organizations that you
belonged to.  I think that some groups (AMGBA?) still have them.
Anybody have any idea as to what they cost?
   LRC