Coloring books are printed books that contain line drawings or illustrations designed for coloring. They are often made for children but can also be enjoyed by adults. Users typically fill in the drawings with various colors using crayons, colored pencils, or markers. Coloring books can feature a wide range of themes, including animals, nature, and popular characters from cartoons or movies. These books serve as a creative outlet and can help improve fine motor skills and hand-eye coordination. Additionally, coloring can be a relaxing activity that promotes mindfulness and reduces stress. Many people find joy in expressing their creativity through the art of coloring.