Instead of a headlamp, I've got a solar powered cap - thin film solar panel on top of the brim, two LEDs underneath that point in the direction you're looking. (The general idea is you're hiking around in the sunshine all day and it charges up, but I leave it on the windowsill). Already been handy in two evening power outages in the last month, but mostly I got it because in winter I have to go tend the chickens in the dark, and it is very useful to have a hands free light when trying to catch a rooster who doesn't want to be put to bed