This product from from Bird-Electron is the “one and only Recycling Speaker for iPod”. The dimension is exactly the same as the plastic package for iPod Nano (1st & 2nd Gen.) and iPod Shuffle (2nd & 3rd Gen.).
It doesn’t require any power source whatsoever, you simply place the speaker panel on top of the open box, and plug it into the iPod and play. You can also create your own speaker by using a water bottle or any other small container.
The Bird-Electron EZ17-B iPod Recycling Speaker ($40) is available from AudioCubes.com for $39.99.
um.. actually i never use these, the point is choose a right headphone, the headphones are best appreciated alone. but these speakers are ideal for social settings where you want to share your tunes with a few others or when you’re milling around your hotel room getting ready for a night out on the town.