Category Events - United States, Washburn (ND) Custom-one-of-a-kind mail-able fabric Zentangle postcards! Fee-$30.00 includes instruction and all supplies needed for two postcards...including postage for mailing! Learn the Art of Zentangle and create a one of a kind greeting card! Never purchase a greeting card again! Share your LOVE of Zentangle with others that you love! Give them something they will cherish forever! 4 Student minimum Preregistration required 3 days prior.