Shower radios are all the rage amongst a certain demographic of people. I’ve never bought one, because I’m too shy to sing the shower and the idea of battery powered devices and running water never really appealed to me. Plus, there was the whole changing the batteries thing.
Fast forward to today. The H2O Shower Power Radio requires no batteries. It is powered by water. Electricity is produced by water flowing through a micro turbine inside the radio.
What else would be useful if you powered it with micro turbines in the shower? I can't think of anything but someone else must have an idea.