A few weeks ago I was at an Antique Market in Ann Arbor. There is a vendor who deals in industrial and agrarian implements to display as art. I have been looking for something 3D to display on the stair wall. I found these rusted, spoked, parts of machinery that were perfect for the wall.
I used construction paper models taped to the wall to decided where to display the 5 pieces. Then I went to Home Depot looking for a way to hang them. I found these great hangers that are made for drywall that you just poke into the wall with your hands.
Click on the instructions photo to see how it works.Here is a photo of the installed "art". I'll be going to the Antique Market in September to see what I can find to add to the wall. I'm also thinking I need new sconces!