I have a Dritz chalk marking pencil (advances much like the Clicker Mechanical Pencils. It came with 8 sticks of white chalk and several pieces of different colored chalk. I find that it stays on very well. It also came with a sharpener so that your chalk can be sharpened to a long sharp tip if needed. I like it because it's very easy to control. Of course, wouldn't you know that the refill for it isn't available in the store (JoAnn's) but can be ordered through an office supply site.