The Burchfield Penney’s current Useum exhibit is fantastic. If you’re a fan of Sendak, Dahl, or “Harold and the Purple Crayon,” you’ll want to stop in. “Secret Spaces,” on display through Sept. 19, explores the crevices of our homes and spaces we escape to, and what secrets we leave there. It’s convenient to think of these “secrets” and “spaces” as being merely metaphorical, but we’ve all got somewhere we go, or someone we share hidden selves with. This exhibit gives anonymous voice to these recesses, exposing the freedom that comes with leaving your baggage somewhere else for others to find. Also on display, for those naysaying adults who think kids are little people to talk to, and not with, the depths of intellectual and emotional maturity in the minds of our young ones.