2013 has been an incredible year for green gadgets – from the advent of affordable 3d printers to innovative new renewable energy generators – and we’ve rounded up some of this year’s best and brightest in our 2013 Green Gadget Gift Guide. From a book that unfolds into an LED lamp to solar-powered headphones and a smart pot that keeps plants alive, read on for 17 high-tech green gifts sure to please the gadget geek on your list!