The Stack-A-Doodle crayons from Fred & Friends offer two activities in one – building with blocks and creating art! These crayons can be stacked like building blocks and are also colorful, safe, durable crayons. Each package contains 13 crayons and comes with a reusable storage tray. What do kids love best – building or coloring? No matter, Stack-a-Doodle does it! Fred re-purposed these familiar stackable bricks as colorful, safe, durable crayons so kids can build their art skills from the ground up. Each set of 13 colorful crayons is packed in a reusable storage tray inside a colorful peggable giftbox.