You can always depend on the numerous gadget companies hailing from Japan to come up with the coolest tech you'll never need but definitely want. The latest example of this comes in the form of the Yorozu Audio Universal Speaker Kit. The set allows you to make nearly anything--an empty glass, a box, or even a window pane--into a real working speaker.
The device works by employing a vibrating sonic transducer which takes the sound from you're iPod or sound system and sends it into the inanimate objects you attach it to. You can pick up the Yorozu Audio Universal Speaker Kit for just 4,980 yen ($56.30) here.