The Greater Phoenix Gay and Lesbian Chamber of Commerce presents this annual showcase of decorated holiday trees, wreaths, menorahs and other displays – all up for auction and sale. A unique travel tree to be auctioned includes an all-expense paid seven-night stay in Thailand. Heavy hors d’oeuvres, a cash bar and performance by Arizona Opera add to the fun. 6-10 p.m. $75-$100. Arizona Opera, 1636 N. Central Ave., Phoenix, festivaloftreesphoenix.org, 602-648-9423.