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Mule Lighting has created a substitute for neon that's made up of flexible LEDs that are just as bright but 70% more energy efficient. The lights also last longer than neon and are more durable, too, with their specially-designed LEDs cleverly inserted inside tough yet flexible tubes. That bendability facilitates dazzling applications as well—Mule says, It looks just like neon except you can tie it in knots.

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LED-Flex [Transmaterial, via Treehugger]

Mule Lighting