My friends like to give me shit for the amount of gadgetry I have on me at any given time. This is the latest. It's a Bluetooth headset/communicator. You can connect to your phone to listen to tunes, to your sat nav to hear directions, radar detector to hear the beeps, and other stuff like that. You can even use it to talk on the phone, but I don't do that when I'm not on the bike so... It's also able to connect to 3 others in a group so you can talk about gas stops and so on when you're out with the boys. Did I mention it does all this wirelessly?
I spend a lot of time riding around by myself and so far this thing has helped keep me entertained.