light bulbs are definitely not in fashion these days (the last time we stepped inside Ikea we were greeted with their announcement that the company plans to stop selling them) because of their total lack of efficiency. Don't tell that to this concept for a tea kettle
, however, which uses the wasted energy of the bulb (nearly 98 percent) to make water for your tea. Now, it doesn't actually bring it to a boil -- just to 194 degrees Fahrenheit -- but many tea enthusiasts will tell you that your water should be just off the boil anyhow. So there.