may as well have a tree hugger or two in your garden! and art pieces that are literally tree huggers.twigs, vines, sticks and branches woven together and entwined to create wicker people that wrap their arms around tree trunks
Mirror installation / Ron Gilad Or-- Another idea: how about a photo ( inside or outside of your store) with a mirror cut out to reflect face(s). Customers can see themselves in the color/clothing without having to try it on!
Fusion Frames [What about other ''rule-breaking'' shapes? Letters, breaking the wall so completely that it can't frame anything, sections of frame that go off on dead-ends, distortions partly alon (Cool Crafts To Make)