Halloween - a celebration which has its roots in Celtic culture reminded me of the Celtic knots. And Celtic knots reminded me of Waldorf pedagogics.
(a picture from website: Celtic Cross stitch)
Form drawing, used by Waldorf pedagogics, is good for practicing coordination between eye and hand, pre-practice for handwriting, for better concentration (and calming down) and for balancing the left and right brain hemispheres.
Try it if you haven't tried it yet. It works!
You can see some form drawings on a website: Waldorf Teachers.com