I recently built a small golden rectangle piece that is kind of fun. Not sure if it's finished yet or whether it will maybe be incorporated into another project down the road… Above you can see where I'm cutting pieces of pre-curved steel to fit into each of the internal golden rectangles. Below is the finished (or not?) piece.
And here's a rust on paper deal I did with it before adding the spiral. Nice overlay shadow being cast by the open dodecahedron outside my shop:
