ThinkGeek :: PartyStarter Bluetooth Speaker With Synchronized Lights - This little speaker delivers big powerful sound through your iPad, iPod, iPhone, or Android device's Bluetooth Function. But here's where the party starts: built-in technology projects colorful lights onto the walls and ceiling that is synchronized with the beat.
Jawbone JAMBOX Wireless Speaker | Really nice bluetooth speaker. Best sound quality, doubtful, but for portability and convenience is a very nice product. Also, you can speakerphone through this, which is a nice bonus