Art Crayons 16 ColorsArt Crayons 16 Colors Crayons that can be used to draw on materials other than paper, such as glass, plastic bags, and bottles! This crayon can also be used to draw on materials other than paper, such as glass, plastic bags, and bottles. With the Zuko Crayon, you can draw works that take advantage of the crayon's characteristics, such as ``swivel drawing'', ``scratching drawing'', and ``rubbing out''. It has an extremely thick shaft with a diameter of