Zentangles in OT mental health

I was recently introduced to Zentangles and I am in love. You get special fine point Micron pens and there are a few basic rules which I semi ignore (google to read about them) but what I love is how it allows you to doodle but pay attention. And it can be very calming. It would be great to teach people with anxiety or let kids doodle while they listen in class.