I saw a swap for "rainbow zentangles' atc swapping at swap-bot.com, and following the info trail learned that they are a relaxing form of doodling/artwork. (More info can be found at http://www.zentangle.com/). Though the website indicates that the zentangle is basically without a specific form, I couldn't help it, mine came out in forms of koi, cat, peacock, etc.! They were fun to do, though....