Thanks to Patrick for flagging up the Mintpass Cube MP3 player, an audio player with looks that come straight out of the 1960s.
Four sides, three with those quirky old school meters (for battery level, VU and radio frequency), the other for connectivity, although it does also offer Bluetooth for wire-free tunes. Talking of features, it plays back your MP3 files, offers FM radio and has some chunky buttons to access it all on the top.
The downside? Right now it's not for sale, although with this being a finished project, there's no reason why it shouldn't make the market in time.