We all saw tea kettles that heat water with candles. Here is another idea by French designer Estelle Sauvage – a tea kettle that uses a light bulb to heat water. It looks as simple as possible and that’s one of its features. The kettle uses 100W light bulb to heat water. Even though the bulb can’t bring the water to a boil, it can make it warm enough for tea. Besides, thanks to the bulb, the kettle works as conversation lamp very well.