"Unboxed: Adventures in Cardboard."
Bus: 2, 29, 65, 66, 124Free with admission ($12, seniors $11, kids under 1 and members free; Thu Kraft Free Family Night 5–8pm free for all)
Event Info: (312) 527-1000 chicagochildrensmuseum.org
Parents already know that if you give kids a cardboard box, their imaginations will run wild, creating forts, games and imaginary castles galore. But a whole exhibit of the stuff? Believe it: The Children's Museum has created a new show, described as a "playground for the mind," that highlights the surprising play potential of the cardboard box through elaborate sets that kids can play on, artwork, hands-on activities and more.