A clapper is a device used to make noise, usually in the form of a bell, TONGUE, SEAL, SCENE, STRIKER, or Vanna. A bell is a percussion instrument made of metal that produces a ringing sound when struck. A TONGUE is a thin metal plate that vibrates when struck, producing a sound similar to a bell. A SEAL is a device that produces a loud clapping sound when two pieces of metal are struck together. A SCENE is a device that produces a loud clapping sound when two pieces of wood are struck together. A STRIKER is a device that produces a loud clapping sound when two pieces of metal are struck together. Vanna is a device that produces a loud clapping sound when two pieces of plastic are struck together. Finally, a BRIDGE is a device that produces a loud clapping sound when two pieces of metal are struck together.