An apparatus includes an elongated band having a first terminal end, a second terminal end, a top surface, and a bottom surface. A plurality of openings extend through the top surface and the bottom surface of the band. A plurality of moveable vibrating elements are coupled to the band at the plurality of openings. A plurality of moveable covers are also coupled to the band. Each of the covers encloses an internal cavity configured to receive one or more of the moveable vibrating elements. A releasable connection assembly includes a first terminal-end connector coupled to the first terminal end of the band and a second terminal-end connector coupled to the second terminal end of the elongated band. The second terminal-end connector is releasably connectable to the first terminal-end connector.