Post-it pictures

They're often thought of as no more than a mere office supply, but after seeing this YouTube video, I have a newfound fascination for post-it notes.  Take a look at the many faces of these sticky little square, round, heart-shaped, pink, yellow and hot green pieces of paper:

reminders:

small art:

big art:

3-D art:

cover walls:

cover your entire apartment:

Photos five and six via {Weburbanist}