Whether you want to conserve green dollars or resources, guesstimating with a carbon calculator only goes so far. This eco-geek gadget from Blue Innovations will help you monitor your home’s electricity in real-time. Compact and elegant, this cool blue wireless display will gauge your power use with the simple push of a button. Just add rechargeable batteries to start saving. Program in local utility rates and you’ll get within 5% of actual usage. Estimated Cost: $135. Value to the planet? Priceless.
