Zebralight.
im a aircraft mechanic. and carry my zebralight all the time. it usually sits in my front chest pocket. or i can clip it to my to the middle of my chest right above a button of my button up shirt. its great at close range cause its a flood light. i have the h501w model and its rated at 80-90 lumens.
its a great headlamp(comes with a headband), lightweight and small. but i dont even need to attach it to my head because i can clip it securely to my shirt. its great at close range, and brightens everything in front of you.
mine uses a single AA battery, or you can get the model that uses a single 18650 cell, which is much brighter.
since i use my lights on a daily basis, i charge them every other day, just so i know itll last me the night without any problems.
the clip on zebralights work great. can easily be adjustable to point where you need it most.
i also ordered some magnets to attach to the bottom of the light, makes its usefulness so much better.