One of my hobbies is photography, and I decided to dissect a lens a while ago. The elements inside resulted in a few interesting effects, but I also got some magnification elements.
I figured that some banknotes especially are quite beautiful, so I combined the setup with a panorama program I've got, and so far have done 3 mosaics:
1919 Canada 1-cent coin (100MP)
http://raptor-rapture.deviantart.co...ry/#/d38qnct1910 German 1000 Reichmark (60MP)
http://raptor-rapture.deviantart.co...ry/#/d382vkc1908 German 100 Reichmark (100MP)
(not online yet).
Just thought it would be of interest :)