Safety is a priority for you nighttime and/or dumb bicyclists. Replace your bike’s nitrous oxide speed boost canisters with the Magnetic Bike Light from Copenhagen Parts ($Mystery). The lights turn on after attaching them to the metal frame of your bicycle, and turn off after removal. That’s it. No fancy tricks here. You could attach it to the metal plate in your head and declare yourself king of the cyborgs, but that would be a silly idea. Just use it for its intended purpose, ass.