Cat into tea cosy

"I'm warning you Hermione, keep that bloody beast of yours away from Scabbers or I'll turn it into a tea cosy!"

- Ron

This spell could be used to transform a cat or kneazle into a tea cosy. Ron Weasley was capable of performing this spell, and warned Hermione Granger that if she didn't keep Crookshanks away from Scabbers, he would use it on him.

Appearances

 * Harry Potter and the Prisoner of Azkaban (film)