It took me a while to realize that collecting signs is simpler than, but every bit as satisfying as, collecting signals. My favorite signs to collect are old highway shields, guidepost signs, markers, and so forth from in and around New Jersey. I also like regulation signs like STOP or KEEP RIGHT that are antiquated or in some way unusual or particular to NJ or NYC. I have (so far) resisted the urge to go down the “get signs from all 50 states” rabbit hole.
The images below will link you either to more info about the sign, or to the full-size image.