OK, so January just began, but that doesn't mean it's too early for a summer soiree—just ask Union Square Play. The newly opened space for tots is hosting a summer block party (yes, in the middle of winter) to celebrate its grand opening. Step upstairs to the neighboring Kellogg's restaurant for a children's Battle of the Bands, enjoy classes at Union Square Play (Bebox Art Studio, The Dough Project, playAGAIN to name a few) and refuel with summer snacks from local vendors and Yumi. Snag your tickets when they're available on January 4. Learn more here.