Makes sense right, you want to boost your tunes a bit without carrying a huge boom box style speaker system. You don't want to have a bunch of power and audio cables cluttering the occasion.
Enter the Satechi BT Wireless Bluetooth Portable Speaker System ($45.99). The Satechi BT Portable 
Speaker will allow you to listen to music, or phone calls (has a built-in microphone), from your Bluetooth (Bluetooth Ver. 2.1 , AVRCP, and A2DP) enabled phone or mp3 player.
You can easily pair the Satechi BT with iPhones, iPads, notebooks, and other Bluetooth-enabled mobile devices. Don't have Bluetooth? No sweat, there is a standard 3.5mm audio jack tucked below the speaker.
- Portable Bluetooth wireless speaker with compact vacuum bass design streams music and hands-free calls.
- Bluetooth Ver. 2.1 , AVRCP, A2DP, automatic connection, only one time pairing.
- Easy charging with integrated Li-Ion-battery (USB chargeable) for max 6 hours playtime
- Multifunctional three buttons allow Power on or off, Play or Pause, Next track.
- Compatible with Apple iPhone 4 or 3GS or 3G or iPod touch G4 or iPad or Macbook or or Motorola Atrix or Droid X or Droid 2 or Droid or Milestone.