FlyPi: an open source 3D printed microscope that can be made for €100

Those of us who were fortunate enough to attend well funded schools might take for granted that laboratory equipment, such as microscopes, are actually quite expensive. This, of course, means that most schools around the globe do not have access to scientific equipment which can be used to teach, train, and research.

from 3ders.org - http://www.3ders.org