Dread shopping at the mall? Prefer buying local and handmade? Now you can head downtown and still keep your chin up. River Park Square will be ground zero for shopping procrastinators and buy-local snobs alike this Saturday when arts nonprofit Terrain holds its second-annual holiday Brrrzaar. From 10 a.m.-9 p.m. Saturday, more than 70 vendors will set up an outdoor-like market on all three floors of the mall’s heated halls. There will be dozens of jewelry makers, bath balm mixers, knitters, painters, printmakers and leather crafters. Artists will beckon mall shoppers with booths stuffed with their local and handmade wares.