WaterLily is a portable turbine that generates power from rivers. It can charge USB and 12V devices, including cell phones, battery banks, camp lights, and Bluetooth speakers. When used in an average river, it can charge most small electronics as fast as your wall outlet at home. The WaterLily Turbine makes having a passive eco-friendly power generator simple, and should especially be of interest to those who camp, homestead or head outdoors in the vicinity of flowing water. Output connections: USB or 12 Volt Price: $159. No more worrying about cold days, when your solar panel is useless, or a battery pack which might die out. As promised on the developer's website, a new device on the market is effectively a portable power turbine that can produce up to 360 W of electricity a day, according to WaterLily. It's not only convenient but versatile, as both wind and water can be used to power the WaterLily turbine.