It's playtime this weekend as American Swedish Institute celebrates its 90th

Twenty-nine objects from the American Swedish Institute's collection pop up around the Turnblad Mansion and the Nelson Cultural Center in odd ways. A small-scale wooden replica of the Vasa, a Swedish warship that sank in 1628, sits in a glass case atop a bathtub. A drawing of a tiny white mouse hides in the closet around the corner. A giant vat of blue balls occupies the mansion's ballroom (get it?).

It's all part of "Extra/Ordinary," an exhibition marking the ASI's 90th anniversary that pairs artifacts, from original wood carvings to hair bracelets, with watercolor paintings and ink illustrations created by mom-son artist team Tara Sweeney and Nate Christopherson for the new picture book "A to Zåäö."