Mud Clock uses dirty power source

First we have potato-powered MP3 players, and now clocks that keep the time due to mud? You certainly don’t need to rush out to the nearest grocery store to buy some batteries to power the Mud Clock, as all you need is a little dirt and water. Heck, if you’re feeling more love for the environment than usual, just throw in some daisy seeds and watch them grow. The Mud Clock will not automatically turn on the moment you stick in the clock components as you would have to wait for a while before enough power is gathered. The Mud Clock retails for $19.95. When will they come up with eco-friendly chargers for cellphones and other devices?