Clientele Signifiers

Bars and clubs usually have some kind of atmosphere designed to attract a certain clientele or to make one feel like one belongs to that particular in-crowd. Why not go beyond lighting, maintenance, decoration, and the contents of the jukebox and just have symbols on the outside of the bar? These would be some kind of easily identifiable iconography. A football helmet for jocks and jock sniffers, the silhouette of Buddy Holly glasses for hipsters. A pot leaf for hippies. A martini glass for yup-and-comers. A big screen TV for sports fans. A cigarette smoking in an ashtray for beat-up old drunks.