Mirror ball or glitter ball is a roughly spherical object that reflects light directed at it in many directions, producing a complex display. * Surface consists of hundreds or thousands of facets, nearly all of approximately the same shape and size, and each having a mirrored surface. * Mounted well above the heads of the people present, suspended from a device that causes it to rotate steadily on a vertical axis, and illuminated by spotlights, so that stationary viewers experience beams of light flashing over them, and see myriad spots of light spinning around the walls of the room.