Michael Dant has a collection of well-cared-for Panasonic portable music players from the early 1970s. He's also taken excellent photos of them, which you can see here. I had a red Toot-a-Loop AM radio. Panasonic ought to re-issue this line of Panapal players with Bluetooth streaming and MP3 playing capability.

http://feeds.boingboing.net/~r/boingboing/iBag/~3/q8MMJuWlmkM/michael-dants-photos-of-colo.html