100% Battery-Free, Human-Powered, Hand-Crank Eco Light

Modeled on the kind of manual pencil sharpeners (some of us) students grew up with by the doors of classrooms, this may be one of the more classy and convenient hand-powered lighting concepts yet created. And if that were not enough: as a bizarre bonus, you can even still sharpen pencils with it! A simple

100% Battery-Free, Human-Powered, Hand-Crank Eco Light

Infinite Orbit - Power Generating Hand Crank – Texenergy

The Manual of Free Energy Devices and Systems, PDF, Inductor

Go Anywhere with Portable Power - Lion Energy

FanFlex: Lightweight flexible crests and patches that fold easy. - FanTex: An all-new super comfortable soft fabric. - FanFit: The authentic on-ice

Guyuyii 4 Pack Hand Crank Flashlight, Powerful Emergency Light Safety Tool with 3 LED White Light, Built-in Battery, Crank Flashlights for Camping

A skeptic's review of the BioLite CampStove: it's neat but mostly

Get ready for wet bulb temperatures aka when it's 'too hot to live

100% Battery-Free, Human-Powered, Hand-Crank Eco Light

FanFlex: Lightweight flexible crests and patches that fold easy. - FanTex: An all-new super comfortable soft fabric. - FanFit: The authentic on-ice

HYDDNice Manual Hand Crank Generator Portable Emergency Hand Power USB Charging Generator for Camping Outdoor Activities

Could a hand cranked generator produce enough electricity for an

FanFlex: Lightweight flexible crests and patches that fold easy. - FanTex: An all-new super comfortable soft fabric. - FanFit: The authentic on-ice

Guyuyii 4 Pack Hand Crank Flashlight, Powerful Emergency Light Safety Tool with 3 LED White Light, Built-in Battery, Crank Flashlights for Camping