This is a close up of a clamp-on book light with the light shining on the clamp.
I used two extension tubes (12mm and 20mm) in addition to the Canon 17-40mm f/4L USM lens.
Very little PS done to it. A couple of adjustments in RAW to bring out the deep blue color, then a fair amount of dust removal, followed by alternating noise reduction and sharpening. A thin black border was added.
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Looks like a nail or rivet holding 2 pieces of plastic together. Can't be more specific than that. I really like it, nice and abstract with great colours.