"Mr. Filch, the caretaker, has asked me to tell you that the list of objects forbidden inside the castle has this year been extended to include Screaming Yo-Yos, Fanged Frisbees, and Ever-Bashing Boomerangs. The full list comprises some four hundred and thirty-seven items, I believe, and can be viewed in Mr. Filch's office, if anybody would like to check it."
One of the four hundred thirty-seven items banned by Argus Filch in 1994.
Joke item. Added to the list of items banned in the castle at the start of Harry's fourth year (GF12)