November 11th we celebrate the humble art of folding paper. Go fold a crane or something! Especially since cranes are now an auspicious symbol for seeking peace. Nobody really knows when origami started, but the first paper might have been brought to Japan in the 6th century by Buddhist monks. The first real mention of the art comes from a reference in a 1680 poem. While traditional paper-folding arts allowed for irregularly shaped pieces of paper and some cutting, the influence of German techniques means that origami now prefers squares folded with no cutting.