Minecraft wiki entry for Bell, associated text: When the side of a bell is used, it produces a sound as well as a "swaying" animation. Bells can be rung using a redstone signal. They can be rung by any projectile by right clicking or dropping an item on it. Bells can be anchored to the side of blocks, ceilings, and floors. Also, if the player uses the bell while villagers are sleeping, all of the villagers wake up. Bells can be rung only from certain angles; trying from an incorrect angle does not cause the bell to ring.