I love crayons. I keep a Reeves set (they seem more greasy than waxy) hidden away out of anyone's else's touch. My children are adults but Santa still leaves a colouring book and crayons in their stockings each holiday.

I prefer colouring with a quality set of crayons to markers any day.

Are they a cure all for depression? Not on the long term. They more tackle the immediacy of a depressing difficult day. They don't keep the depression at bay. Still, they are a great distraction for the time.