Free Toddler Do-a-Dot Printables - These free printable do-a-dot sheets (also called dot marker coloring pages) are so much fun for toddlers and preschoolers! These free do-a-dot printables are a no prep and low mess activity for toddlers and preschoolers. Kids will love dobbing away at these with dot markers or you can also use dot stickers with these printables.