While looking for shapes in architecture I found this deco looking light switch in an old chicken shed. I didn't convert it to b&w for the challenge, as I liked the brown monochrome color.
It looks great in monochrome - certainly better than black and white in this instance. We used to have plugs that were brown bakelite, which was the forerunner of plastic (I am going back to my childhood here!). I like the soft focus you have given it too.