The Griffin AirCurve ($20) is a one of a kind powerless sound amplifier. It uses a system of carved out passage ways to amplify your iPod’s sound up to 10 times. It is made out of a clear polycarbonate material that helps to amplify the sound. And when your not using it on the go, feel free to use it as your normal iPod dock, seeing that it has a cradle and passage way for the cord. All this is available now on Griffin’s website.