Whimsical and joyous, B. Wurtz’s small-scale sculptures nevertheless pack a deliberate and cerebral punch. Under Wurtz’s careful direction things that ordinarily end up in the rubbish bin, morph into elegant and poetic assemblages. Shoelaces, buttons, plastic bags, socks. Wurtz elevates the ordinary into the extraordinary and blurs the line between high art and craft, collector and hoarder, decoration and design. At Metro Pictures through October 20. Don’t miss the artist’s Public Art project “Kitchen Trees”, a playful exhibition of seven arboreal sculptures fashioned from kitchen utensils. At City Hall Park through December 7.