A drum kit ( or drum set or trap set ) is a collection of drums , cymbals , and other percussion instruments that is used by a drummer in a musical group . A drum kit ( also drum set , or trap set ) is a collection of drums , cymbals and often other percussion instruments , such as cowbells , wood blocks , triangles , darbukas , chimes , or tambourines , arranged for convenient playing by a single person ( drummer ) .