The H2O Powered Shower Radio is promises to run on H20 alone.  Just install it in line with your shower hose, and the power of the force of water passing though it’s turbine, something called hydrodynamics, will generate enough energy to receive a radio reception and blast it through its small speaker.   An onboard battery stores juice for a limited time.

Firebox, the online retailer offering the product,  says you can preorder it now for about $55 (£34.99 UK) with an expected ship date of April 8th.