video
https://www.snagshout.com/offers/led-headlamp-flashlight-cree-t6-batteries/d4b5bd
https://www.snagshout.com/offers/headlamp-flashlight-with-pocket-tool/963a68
All Medium size (Permanent Marker) Small size (Car key / Zippo ).
https://en.wikipedia.org/wiki/Headlamp
https://en.wikipedia.org/wiki/Headlamp_(outdoor)
https://en.wikipedia.org/wiki/Headlamp_washer
Volcanoes and volcanology | Geology
Dictionary.com’s List of Every Word of the Year …