Tech gadgets are always nice.  And when they succeed in combining crisp design with clever energy saving, they’re even better.  The following two concepts are some great examples we recently stumbled upon (thanks to Link Drop Today).

Imagine the human body as an illuminated walking billboard… Science fiction?

Not if you see the latest developments in bio-engineering. Researchers at the Beckman Institute (University of Illinois) and the Tufts University in Medford, have managed to build silk-silicon LEDs that can sit under the skin and might act as little photonic tattoos.