I could not resist when seeing a USB microscope at a well-known German discounter, where I had gone to buy some advertised fountain pens.
It can magnify 10x, 60x, 200x with its own lights from above, below or both. The resolution is not great but for the price it is an amazing tool. It makes it easy getting closer and discovering as yet unseen things (all just within reach on my desk)
a close look at some birthday cards
a watch and the other side of the birthday cards