Pocket Piano Synthesizer
Despite its name, it's definitely more of a synth than a piano. The Pocket Piano Synthesizer ($150) is a nifty small bag- or cargo pocket-sized musical contraption featuring an industrial look, a built-in 3-Watt speaker, a 1/4" output jack, wooden keys, and the ability to run off a 9V battery, as well as six unique modes, including a vibrato synth, harmonic sweepers, two-octave arpeggiator, an octave cascade, mono FM synth and a FM arpeggiator, or more than enough to amused for hours, or at least until the battery dies. [via]