A cauldron that stirs itself.
Invented by Gaspard Shingleton in the latter half of the 20th century.
It's not clear how well this product works. Potions tend to require that you follow the stirring instructions very precisely. The Quick Quotes Quill, which performs a similar function to that of the self-stirring cauldron, is not precisely accurate. Additionally, it is not known how the self-stirring cauldron works, but charmed devices often wear out fairly quickly. -BB