PiGlass is a DIY wearable computer!
PiGlass can be used to take HD pictures and videos, those files get automatically uploaded to Dropbox via a Wi-Fi connection.. You can stream music from your phone to PiGlass with Bluetooth as well as stream YouTube audio with mps-youtube. A bone conduction transducer can be added to be used instead of headphones. YouTube videos can be streamed to PiGlass using the RaspiCast app for Android, the camera on PiGlass can be livestreamed to YouTube.
You can control PiGlass, once assembled, via your phone via SSH over Wi-Fi.