When I got my very first one (a turquoise PII from before I started The LED Museum), I velcro'd it to the steering arm of my electric wheelchair and freaked people out at the Pike Place Market with it. /ubbthreads/images/graemlins/wink.gif
I have a testimonial on the Photon website:
"I put a tiny piece of Velcro on the back, and stick them to my motorized wheelchair to allow it to be seen at night. The turquoise one puts out a very brilliant, radiant light that can be seen for thousands of feet. Little chance of being mowed down by a car at night with Photon Micro Lights guiding the way. /ubbthreads/images/graemlins/smile.gif -C. Johnson"