The activity for Harry Potter is Quidditch, a sport played on broomsticks. It is a popular game in the wizarding world and is featured in the Harry Potter books and films. Quidditch is a fast-paced game with two teams of seven players each, who must score goals by throwing a ball through a hoop at either end of the pitch. The game is full of magical elements, such as the Golden Snitch, which must be caught to end the game.