We've posted a bit of info about these once before but as the days continue to get shorter we figured it was worth mentioning them again. Gekko headlights are an ingenious little invention: They have 3 simple LED lights that clearly identify you to motorists, pedestrians, and other cyclists on the road, and they can fit almost anywhere on almost any bike due to their unique design - they simply wrap around any bike tube, front fork, or handlebar.
They're not really meant to cast much light to allow you to see in the dark - we've got other lights for that purpose. But, if you do most of your riding/commuting in areas where you don't need help seeing as much as you need to help others see you these guys are just the trick, and they're a very reasonable $30 ea.