I'm kinda with the static cling idea myself. How about a small round or ?? "clingy" that would stick on the windshield where the inspection stickers used to go or on the rear class somewhere. Could be removed or transferred to other vehicles, less obtrusive and still get the word out. Also cheaper to build
Our Corvette club has them and they're sweet!
As far as the ones you have, i kind of like the top one the best.
I have a bold one like you bottom one on my Z28 that bears the name of our F-body group.
It's in red against all black and looks nice, but sometimes I go ????
Oh well, like you, I started this Camaro & Firebird group and felt required to promote it
Gordon