Mini Post-it Note Glider

From Instructables.com:

"This instructable, inspired by the proliferation of micro-sized paper airplanes, contains instructions for building a miniature sailplane out of paper and a staple. It has a fuselage measuring 40 millimeters, a wingspan of 60 millimeters, and a height of 7 millimeters. Despite its small size, it has surprisingly good aerodynamics, which is due to the fact that it shares similar dimensions and attributes with full-size sailplanes... Due to these attributes, this small glider can glide for substantial distances, perform tight aerobatics, and even gain some altitude on thermals created from heaters."

Complete instructions to create your own paper glider may be found here.

Mini Level 3 Post-It Note Menger Sponge

Nicholas Rougeux created a level 3 Menger sponge out of post-it notes and it took him a mere 867 days. ^^ I definitely don't have the patience to attempt this one. To give you an idea of the scale, each of the tiny cubes in the sponge is built from pieces that are 1/16 of a standard size post-it note. The finished sponge measures a little over 11" (28 cm) in each direction. A Menger sponge is a type of mathematical entity known as a fractal curve. Instructions to build your own Menger sponge are located here.