A cow rib bone used for tapping.
Clappers, made from a variety of materials and not only of bone, are used as percussion instruments in many parts of the world and have a long history. The widespread use of bones as a percussion instrument in many cultures is not surprising as they are such an obvious 'ready-made' instrument. In Ireland, England, Scotland and North America today, they are used as rhythm accompaniment to traditional folk music bands (fiddle, banjo, accordion, and so on). Also, particularly in the USA, they are used as a novelty instrument with dance in Minstrel Shows of the late 19th and early 20th centuries.