The ingeniously named Wattson is a device that keeps track of the amount of energy your entire home consumes in real time, and it does this without the hassle of pesky wires. All you need to do is clip its transceiver to the cable between your electricity meter and fuse box and you’re good to go. Not only that, the Wattson also displays electricity cost estimates while flashing LED warnings whenever you clock up too many hours on your HDTV and Xbox 360 playing Halo 3. If you’re that much of a control freak, you can also join the online Wattson community to download a record of just how much energy you use and compare those results with other Wattson owners. The Wattson can be picked up for approximately $125 now – a far cry from the $687 which we posted about back in December last year.