rhombos

Known as the rhombos, the device was used in the ancient Greek mystery religions. It has been observed in rituals of mystical or religious significance in Australia, Africa, North and South America, and areas of Oceania, where—with its animal-like howls or whirring voice—it may symbolize the presence of…

…and Sumatra, and the similar rhombos of the Hellenistic mystery religions, was propelled and whirled by a thin strap. Its humming sound and trajectory gave it the dual character of a summons to the divine world and a link with the celestial regions.