YOUR TAX-DEDUCTIBLE CONTRIBUTION PURCHASES THIS ITEM FOR OCS - THANK YOU! An exciting method of teaching students how to play Orff and all tone barred instruments. Bellboards are durable, brightly colored desktop replicas of the tone barred instruments, varnished for lasting beauty. The diatonic set of Bellboards comes with a teaching format; 25 brightly colored student bellboards; and one large teacher's bellboard, silk screened and dry mounted on heavy board.