Floor warming innovation Here is an innovation for floor heating. It consists of a chimney-like component—11 mm in diameter with a wall thickness of a few millimeters—topped with a lid. The lid features three small holes along its edge, allowing flue gases to escape while keeping the heat generated by the candle contained within the tube. The heat source is a 6-hour tea light; it must have a metal casing—plastic casings are not suitable, as they would melt. The lid becomes too hot to touch, though the sides can be handled briefly. In other words, it is no hotter than a standard candle lantern. The device is placed atop a twig stove, with a gap of a few centimeters between the stove and the floor to allow for air circulation. The principles behind this floor-heating method are as follows: Because the exhaust openings for the flue gases are small, the heat remains trapped inside the tube; this, in turn, heats the steel base of the twig stove, which sits beneath the candle. There ar...