Above, a spiral in frost on a hot-tub cover. Below, a rose bud; far below the end of an interchangeable screwdriver bit.
I took these with the Nikon 55mm f2.8 Micro Nikkor, borrowed from my brother. (It is old enough that my camera does not register anything about it — even its presence — so it is full-manual and leaves an unhappy gap in my metadata for exposure and lens type. I also experimented with it in combination with an extension tube.)