Found this intresting.
http://www.prweb.com/releases/2013/11/prweb11343341.htm
Hydrobee SPC Launches Portable USB Hydropower Turbine to Charge Phones and USB Gadgets from Flowing WaterThe Hydrobee (TM), now on Kickstarter.com, is a hand-held hydropower turbine that harvests energy from flowing water and converts it to USB charging output. It can be attached to any water faucet or hose, or it can be anchored in a fast-flowing stream or river, or it can be towed behind a sailboat or canoe.
http://www.prweb.com/releases/2013/11/prweb11343341.htm