A rubber duck is a toy shaped like a duck, typically made from rubber or plastic. It is often used in bathtubs and swimming pools, providing entertainment for children during bath time. Rubber ducks are usually brightly colored, with yellow being the most common color, and they often float on water. The rubber duck has become a popular symbol in various cultures and is often associated with childhood and playfulness. It has also inspired numerous variations, including themed designs and characters from cartoons and movies. Collectors often seek out unique or vintage rubber ducks as a hobby.