The saucepan that stirs itself. Set fire to your wooden spoons, no more standing at the stove, ladies, stirring that cooking pot as Japanese dentist (?) Hideki Watanabe has come up with the Kuru-Kuru Nabe (round and round pot).
It's not just ladies who cook you know. I wonder how many of these miracles of Japanese ingenuity will make the short journey from first use on the stove to the furthest reaches of the cupboard never to be seen again.