Some folks believe that charging your devices via your car’s lighter socket will waste a good deal of energy, and a Brazilian design studio, Baita Design, has come up with a concept device called “iboo” that helps address the situation. Instead of having your car’s lighter socket pumping out more energy than needed, the iboo will just store the excess energy in itself, allowing you to use that energy later. The iboo features an integrated lithium-ion battery to power your gadgets, and will be able to be charged via the lighter socket and charge your gadgets at the same time. It’s also fairly lightweight and small, measuring in at 150 x 100 x 30mm. It’s available in light bamboo with gold aluminum or dark bamboo with silver aluminum finishes.