I used my first Petzl Zoom headlamp when I did quite a bit of camping / portaging. Now I have several headlamps and use them for, in no particular order: setting up at trailhead for night mountain-biking, camping (still), soldering battery packs, installing computer parts, car maintenance, looking for things in the hall closet and other household duties and there's a headlamp + spares that I will be putting in my Emergency / BOB kit. I used to have one on my helmet for night-time bike rides but found that dedicated bike lights worked better.