Well, I have 70 signs/banners now covering about 160 sq. ft. of wall space. I have a total of 470 sq. ft I can put stuff on, so I'm only about 1/3 of the way done. I figure to have just over 250 signs/banners/hubcaps/license plates on the walls by the time I'm done (not counting the couple hundred magnets and decals scattered about on the shop freezer and tool boxes/benches).
It's going to be like a mini museum display with the GTS as the centerpiece when I'm done. :D