Cross the secular December holiday Festivus – introduced to the popular consciousness in a 1997 Seinfeld episode – with Phoenix and you have Phoestivus, a wintertime market celebrating its 13th year in the Valley of the Sun. Like its namesake, Phoestivus offers an “airing of the grievances” and a Festivus pole, but our Phoenician fest also boasts local vendors (200 last year), art, crafts, food, beverages, Hipster Santa Claus and Phoestivus mascot Phreddie the Yeti....