Sanrio coloring books are a fun activity to color the characters. Hello Kitty, My Melody, Little Twin Stars, and many other characters. Coloring books are relaxing and a good way to exercise creativity for children as well as adult. Color selection: feel free to paint with your favorite colors. Tools: Try using different tools such as colored pencils, crayons, watercolors, etc., to achieve different results. Background: Paint not only the characters, but also the background to create a more three-dimensional effect.