Wash out that brush, Snap that cap, Quit stabbing the glue tip! Whatever it is, your supplies deserve the best treatment. They will treat you the way you treat them. If you bang your pencil, the lead will fall out when you sharpen or draw. If you peel your crayon, it will crack under pressure.
Post this Art as a reminder in your class to respect the tools that make masterpieces possible.
Help them remember the rules.
Go get the coloring handout too...