Catherine wheel

A Catherine wheel is a type of firework which when ignited rotates quickly, producing a display of sparks and coloured flame.

Fred Weasley and George Weasley made Catherine wheels as part of their Weasleys' Wildfire Whiz-bangs line of fireworks. They unleashed them in Hogwarts School of Witchcraft and Wizardry the day that Dolores Umbridge was assigned to be Headmistress.