Several years ago, I made a wall hanging from plywood and old CD's. It hangs in my oldest son's bedroom. Not long ago, our youngest son was working on a project. He was sitting next to the wall hanging, and when I came into the room to check on him, I saw the neatest thing.
The sun was shining just right to make a reflection off the wall.
Don't you just love the way it reflects off the wall?