Simple gizmo you can print out for a phone microscope

This is pretty cool, its a simple sleeve you can print out and pop a lenses in and bang, you have a mini microscope on your phone.  Supposedly this will keep costs down to $1 too.

http://www.3ders.org/articles/20140917-now-you-can-3d-print-your-own-smartphone-microscope-for-pennies.html