Between the music and just watching how cool this is I think this has to be one of the best stress relievers. Check out how cool this is............

You can get the game here: http://www.kloonigames.com/crayon/ its not a free one but they have a free demo version you can download to try. Now from what I have read its much better on a touch screen vs with a mouse. For me I could just sit here and watch the video and deeeeeeeeeeeestress from the day!