Celtics guard Avery Bradley played a little basketball on a brand new court at the Belmont home of Laura VanderHart and her husband, Jarrod Goentzel. The couple had written an essay and submitted to the Celtics as part of this year’s Celtics/Arbella Insurance Home Court Makeover Program — and they won. As you might expect, all the kids in the neighborhood came over to check out the newly paved court, which, of course, includes the C’s shamrock logo. And then they went to a clinic hosted by Bradley at Boston Basketball of Waltham (at left).