Reelights
I was going to go with Pedalites, a previous Cool Tool, but I didn't want in-pedal generators that add resistance to your effort. These front/rear-mounted strobe lights add very little unsprung weight to both wheels and work via magnetic induction, so there's very little additional weight and no added rolling resistance. The initial ride takes about a mile to bring the front (white) LED up to a full charge, while subsequent rides have me fully lit in about fifty feet of pedaling. The rear (red) LED gets flashing in about half the time and stays flashing longer during any stops (it also flashes more regularly). They both flash for at least two minutes after stopping, which is ideal for early AM rides and for any stopovers where you're basically waiting for traffic. (more)
via: cool tools
