Catapult

A catapult (also known as a slingshot) was a handheld weapon consisting of a Y-shaped stick with an elastic band strung between its two prongs, which was used to fire small projectiles like stones, typically by children.

Goliath, a giant mercenary hired by the Philistines to fight for them in ancient war between them and the Israelites, was slain by a young boy armed only with a catapult.

Winged catapults were one of the forbidden objects hidden in the Room of Requirement at Hogwarts School of Witchcraft and Wizardry.

Appearances

 * Harry Potter and the Prisoner of Azkaban (video game)
 * Harry Potter and the Half-Blood Prince