juggling is a skill where a person (the "juggler") keeps objects ("props") moving for a long time, using their hands or other parts of their body. the most common props are balls (or beanbags), clubs and rings. some jugglers use more dangerous-looking objects such as knives, fire torches and chainsaws. there are other kinds of juggling prop such as diabolos, yo-yos, poi, devil sticks, cigar boxes, foot bags and hats. some jugglers use bouncing objects.