Why is this impressive? It's not made out of paper. I see plastic lenses, LEDs and batteries. I can buy a microscope on eBay for less than $2 (http://www.ebay.com/bhp/pocket-microscope). Why is it better for the housing to be made out of paper than plastic?

Here's my 2 cent microscope "made out of water": http://citizenscientistsleague.com/2013/08/29/the-instant-mi...