When my oldest son was a child he wrote his name on the wall a couple of times in crayon. We put the crayons in a different place. My youngest son got a hold of some crayons and drew all over his walls. Not letters and numbers like  ukf7003axx or anything, just drawing. We moved the crayons again, they’re now kept in cases and bags inside a cabinet next to my desk, where they can be closely watched. Where do you keep your crayons and markers?