Iconic as the cassette itself has become, most portable players obscured their contents inside plastic housings. The Elbow Cassette Tape Player is different. Simultaneously stripped down and innovative, this concept uses a single pulley to drive the tape and an optical sensor to track the speed. Combined with the bi-axial arm and control wheel, that means it's incredibly small and leaves most of the cassette exposed for your visual enjoyment. Audio is output via a standard 3.5mm headphone plug. The device recharges via mini-USB, a port that doubles as a way to transfer audio to a computer, and a small pin on the back lets you attach it to clothes and bags.