The wish-we-had-it-at-Woodstock Ka-on
Taking an obvious cue from the bespectacled dancing sunflower-toys of yore, Let's Corp.'s Ka-on flower music system actually amps audio through a bouquet of real flowers. Apparently the device sends omnidirectional audio up the stem and through your plant's "water tubes" with yet-unknown resolution. No word yet on whether amping Bach will bump your iris up to 175 IQ, or how quickly your plants will melt to a chlorophyllic mush when you face your friend's petunias in a massive bass-off.
[Thanks, Matt]