Sounds like a good idea, do you have an pics to share?
I sell a 480 lumen flashlight that I had set up on my helmet for the past few weeks.
I have a video on utube if you want to check it out.
http://www.youtube.com/watch?v=VHWH7aCs6i4
I will still like to see the pics of the rubber bands and/or inner tube set up.
Chris