Image via: Yanko Design The folks behind Yanko Design are always thinking, and lately their thoughts are stuck on solar and renewable energy gadgets. The latest design, a hand-crank, “Eco-Twinkle Light” takes the idea of renewable energy, this time human-powered,

and creates a light that is easy for kids or adults to operate. … Read the full story on TreeHugger

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Hand Crank Twinkle Lights Work Just Like a Pencil Sharpener