I love the brake-handle corkscrew, the disc-rotor record player and clutch-lever cutlery. When UK-based Triumph Motorcycles recently collaborated with Birmingham Institute of Art and Design students, rather then asking them to design concepts for future bikes, they had students create lifestyle products using extant parts from their Bonneville T100 model.
To be able to go through the parts bins of a major manufacturer and build whatever you want is like a dumpster diver's dream come true. The results of the collaboration were pretty surprising, and you can check out the full spread over at Design Boom.