My daughter recently bought me an iPhone microscope from there. It simply clips onto the phone. A light comes on, to illuminate the object. Simply place the silver part over the object and you are focussed.
I thought it would be fun to do a tiny drawing and see how it cam out. I like the round framing of the picture. It gives it the look of an old image, trapped inside a rock crystal ring, as worn by a fourteenth century saint!