Square Picture Frame
I created this picture frame so my wife can save prims while decorating her shop, and easily change the picture.
Individually, the picture shows a Land Use of 1 Prim. But it actually only uses 1/2 a prim .. link a pair together and you're still only using 1 Prim. It has two LOD modes .. at very long view distances, the frame disappears and all you see is your image. While you can easily change the picture, you should not attempt to change the outer frame.