Do You Doodle?

I'm not an artist, nor do I ever expect to become one, but I sure like to doodle. Sometimes I forget just how much I enjoy it and go months (or years) without putting pen to paper, but I always rediscover it just when I need something new on which to focus. It's a great way for me to free my mind of clutter and de-stress. Here's my current WIP (work in progress) -- it's a bit of a jumbled mess, but I like it because it allows me to be as scattered in thinking as I need to be, filling in each space with whatever comes to mind:

What do you like to do to get your mind off of things and relax?