If you ride your bike often, the Cy-Fi Wireless Speaker might be a good option for you. You can connect your iPod or iPhone to it and it will play your music and act as a hands-free speakerphone. Here is a video from CES showcasing it.
It comes in both Black and Silver designs:
- Cy-Fi Wireless Sports Speaker for iPod (Black) at Amazon.com
- Cy-Fi Wireless Sports Speaker for iPod (Silver) at Amazon.com
Here is the commercial for it:
When I was riding my bike to work everyday, this would have been a godsend for me. I used to listen to my MP3 player with earbuds, but that made it so I couldn’t hear around me as well. Something like the Cy-Fi wireless speaker would have let me hear the cars around me AND my music.