Unloading your luggage and gear from the plane at night is difficult to do with a flashlight in your hand. That’s just one example of the many times you might need to have both hands free while also being able to point and aim a light source. That’s why a headlamp is an essential piece of equipment.
Pilot Mall carries the best, including a ball cap with a light built into the visor. Keep one in your plane and in your car.