Super Home Radio Mike
Prior to Ronco's Mr. Microphone, the Seyco Mik Co. had the Super Home Radio Mike. The unofficially named mike had ads running in several comics in the late 1940s for a mere $1.98 which back then was a steep amount. With this super mike, you could "fool your friends" by making your own radio shows. This kind of thing might have gotten creative types like Orson Welles into hot water for doing a pretend Martian invasion, but with post-war tensions running high at the time, the last thing your friends and family need is you doing your fake Russian a-bomb attacks through the living room radio as a legit news flash. Aside from the money back guarantee, it's unlikely that apartment tenants appreciated their noisy neighbors doing Golden Age karaoke of Perry Como at 2:30 AM.