Price: $100 

What started as a Kickstarter project has now become one of the most sought-after iPhone cases out there. Aqua Tek's heavy-duty, solar-powered jacket lacks the sleekness and slimness of an Incase cover, but get a load of its spec sheet: A rugged polycarbonate veneer, integrated solar panel, and a 2000mAh battery that increases the charge by up to 1.5 times. Ridiculous.