Forehead lights

Apart from being useful to a miner, a surgeon or a cave explorer, a forehead light can be a much needed tool in other areas as well. For example, working on the underside of a car, boat or motorcycle, or hiking through the woods at night. It’s also used by fishermen and bait dealers to draw worms up from the ground at night after a rain storm. And of course, if you go jogging at night, it can be an invaluable part of your running gear.
Forehead light:

Forehead light pictured: Energizer Trail Finder 7 LED Headlight