Measure your electricity

The Wattson is a great gizmo that lets you measure energy use in your home. Just plug it in and see how much money you're burning by having everything on stand-by, and the house lit up like a Christmas tree.

Makes the need to do something very tangible. And the fact it looks quite cool is an added bonus.

Thanks to Russell, who has got one and is giving it a try (why not ask him how it's going).