The bamboo portable speaker, Bird-Electron EZ-TAKEGTF2. This speaker is made from bamboo called the Japanese SuSu bamboo, it is a special type of bamboo which is smoked and aged for close to 100 years. The speakers utilize the resonance of bamboo. No power source needed. The bamboo speakers can be plug into any audio device through its stereo-mini plug. This bamboo speaker is available at Japanese Gadget Exporter AudioCubes for $199.

[via i4u]