Here’s an all-new eco-friendly alarm clock, dubbed H2O Multifunction Clock, perfect for those who admire green gadgets. It’s made up of recyclable components and doesn’t need electricity or batteries. As it’s a water-powered device, you need to top it up every three months, with a fill of water to keep it running constantly. This simple to use clock executes four different functions i.e. time, alarm, temperature and timer, at a 90 degree rotational increment. Also, the battery comes with a 2-year warranty from the manufacturer. Available here at an affordable £19.99 a pop.