A yo-yo was a toy consisting of two discs connected by a central rod, around which a length of string was wound, similar to a spool. To play with a yo-yo, the user held the free end of the string, then tossed the toy out or allowed gravity to pull it down. This created spin which could be used to make the yo-yo rewind into one's hand.
The Screaming Yo-yo was a type of magical yo-yo that presumably shrieked when a person played with it. Argus Filch added Screaming Yo-yos to the list of items forbidden at Hogwarts at the start of the 1994–1995 school year.
- Harry Potter and the Goblet of Fire
- Harry Potter and the Half-Blood Prince
- Harry Potter and the Half-Blood Prince (film)