Rattles and teethers are popular baby toys that help to stimulate a child’s senses, encourage development, and soothe sore gums. Rattles help to develop a baby’s hearing and vision, as well as their hand-eye coordination. Teethers can help to soothe a baby’s sore gums as they begin to teeth. Many teethers have textured surfaces to help massage sore gums, as well as bright colors and shapes to stimulate vision and mental development. Both rattles and teethers are typically made of soft, safe materials and are easy for a baby to hold.