I put this together this water proof stereo 3d helmet cam about 8 months ago. The day after I made it I took it for a test run at one of the local skate spots. After I had tested it out and found that it was really comfortable I set it aside and started skating. About 1o minutes later I tore my ACL. It has been sitting in a bin at my place for the last 8 months. I hope to take it out in the next few weeks now that I am surfing again.
Of course these pics are in 3d!
You can see the two digital recorders and the camel-back I put them in. The camel-back makes for a nice really small back pack which is almost unnoticeable when you are wearing it.