Introduce your children to the fun and fab world of contemporary art with Between the Lines, Volume 2, RxArt’s second coloring book of drawings by a cavalcade of art stars, from old-timers Ed Ruscha and Lawrence Weiner to young turks Dan Colen and Terence Koh. Double your fun with the kooky stickers by Nate Lowman and Mickalene Thomas, $20.