I was introduced to zentangles this past year and they are so fun and interesting and amazing to do. I haven’t done that many, but I love them! If you google “zentangle” you can get more information about how to do them or get some inspiration. “Many hands make light work” is a saying that Denise Linn often stated during Soul Coaching® . 
My zentangle envelope (above) was partly inspired by a trip to France. The snowflake was part of a calligraphy class on Frakture where we were supposed to incorporate a snowflake into our design.
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