Amazon has Altec Lansing iM-237 Orbit Ultraportable Speaker for MP3 Players (Silver) for $27.40 + free shipping.
Technical Details
* Compatibility: all MP3 players; iPod mini; iPod nano 1G, 2G, 3G, 4G; iPod classic 1G, 2G, 3G, 4G, 5G, 5.5G, 6G; iPod touch 1G, 2G
* Conveniently connects to any music player with 3.5-mm connection and music phones with 2.5-mm adapter (not included)
* Single up-firing neodymium driver provides sound in a 360-degree pattern to easily share the music
* Compact size and battery power for maximum portability; LED indicates power on/off and battery status
* Wrap around cable storage
Altec Lansing iM-237 Orbit Ultraportable Speaker for MP3 Players (Silver) $27.40 FS 
