In Japan Frisk is giving away MP3 players that look like one of their peppermint boxes.

As far as I understood 1,000 Frisk MP3 players are available. The Frisk digital music player has 256MB, FM-tuner, a OLED display and a USB port. Besides the buttons on top and the plugs it looks like a standard Frisk candy box.
Measurements of the Frisk mp3 player are 77x35x14mm.
To have a chance to get a Frisk mp3 player customers have to send in barcodes or something like that MP3 players and USB thumb drives are the new stickers. More and more companies will give away branded Mp3 players, because they got dirt cheap.
More details on the Japanese Frisk site and on GenerationMP3 (French).