From the MAKE Flickr photo pool

Member Mchaceortiz built the Daisy MP3 player – London Underground edition. Nice job – mind the gap!
When a son or daughter asks for a new MP3 player, you can always chime in, “In my day we built our own MP3 players – soldering both ways, uphill! . . . Oh hey we can do make our own!”

Related:

MAKE Daisy open source MP3 player reviewed

In the Maker store:

Daisy MP3 Player