(Maybe we’ll ask all artists who like charts and systems to design this; William Powhida, Danica Phelps, Ward Shelley, Jim Torok, Mike Rottenberg, Lane Twitchell, Sean Landers, Adrian Piper ...

The popular annual event, now in its 29th year, runs through Jan. 1. The family-focused event celebrates children’s books and a love of reading through dozens of decorated story trees.