Customisable Mud Powered Digital Clock

If you don’t have any batteries, but you have plenty of soil, then you’ll like this mud powered digital clock. Using nothing but damp soil and 2 different metals, the current that’s created is enough to power a digital clock. The clock is designed as an educational eco toy, helping kids to learn a little about the chemistry of batteries.

The kit uses copper and zinc to create a flow of electrons, which is the current that drives the low voltage digital display. Admitedly, the clock won’t serve much practical purpose, but I’m sure we’ll see more mud-powered clocks in the future. The mud clock is available from Maplin for just £9.99.