Another dud was the console mount 8-track. We had several of them, surgically removed by yours truly. Every wire, nut, bolt, screw. All had nice pads, usually cracked & worn. Even the under dash 8-tracks didn't sell. A few years before the owner retired, I filled a crate with every sound system component we had and sold it to some guy in CA.
BTW, I recall selling a '69 Camaro convert rear window defogger for big bucks. Had the rare power top/defogger combo switch bezel.