Worried about your carbon footprint? Not every ecofriendly step has to be huge. Small things go a long way to making the world a better place. The Bambeco Water Powered Alarm Clock is a small alarm clock that runs on regular old tap water.

This is not a fancy alarm clock. No special bells or whistle. Just a standard digital read out. It wouldn’t be exceptional at all but for the fact that it runs on water. Instead of inserting batteries or plugging it in to a wall, you just fill the reservoir up with normal water from the faucet and it’s good to go. No special additives or anything, au natural.

Water is great for generating power put it’s usually through a friction system. Like a mill. This clock converts the ions from the water into energy. One fill up lasts for six whole months. Yay, Science! After the water runs out, then you just fill it up again. No batteries to leave behind in a landfill. The Bambeco Water Powered Alarm Clock is $30.