Portable media players are quite common, but sometimes it is nice to listen without the earphones. Here is a pair of speakers that are easy to carry, yet extend out with a twist and a pull in order to provide better bass response. The speakers come with both USB and audio plugs, allowing you to use it with both audio equipment and a computer.
The Pocket-Sized MP3 Player Speaker costs $29, and you can find it at Seventh Avenue.