Systems and methods are provided for a rehabilitative and ambulation accessory for a walker. The system provides visual and auditory cues to improve the movement pattern or walking ability of an individual with gait problems caused by physiological or neurological issues, injury, or surgical wounds. The invention may also be used as an exercise training device. The invention includes two balls which illuminate in an alternating fashion to provide a visual target for each leg. The user then reaches for the illuminated ball with his foot. When sensors inside the balls are triggered, the system returns visual and auditory feedback, such as a bright light and a pleasing tone indicating a successful step.