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"... this human-powered hourglass lamp that draws its energy elegantly from grains of falling sand"

a headlamp around a gallon of water = ambient light for your tent and a great night lamp when the power is out

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Seriously clever! A headlamp around a gallon of water = ambient light for your tent and a great night lamp when the power is out or for little kids campfire nights!! :D

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My new lamp love from Tvåfota Design! www.olssongerthel...

1 | Buy This Amazing Looking Solar-Powered Lamp, Light Up The Developing World | Co.Exist: World changing ideas and innovation

3D Printed Lamp Doubles as Wind Turbine, Powers Itself - The light is generated by the spinning of wire coils past magnets generating electrical current to power the LED bulbs. Appropriate to its shell form the design has been printed in a ceramic material that is lightweight and durable enough to spin in the wind.