Kids are notorious for leaving lights on. They don’t have the burden of knowing how high that energy bill really is when they constantly leave the lights on within rooms they aren’t using. This light switch was probably created to save the earth, but it might be nice to have purely to save your sanity. With this visual reminder of how much energy is being used, it might help you keep your energy bill down.
This Tio Ghost wall-mounted light switch system is a design by Tim Holley. It’s actually developed with kids in mind to teach them about conserving energy. When the light switch has only been on for less than an hour, it glows green. Then after four it goes to yellow and after eight it turns to an angry red. Sadly it is still just a design, so you’ll have to find some other way to motivate the kids to turn out the lights.