anyone heard of the Post-IT war? Put up some classic post-it notes shaped as your favourite arcade hero such as Pacman, Spaceinvaders etc.. maybe the office on the other side will respond with an attack?
Here is my attempt on the window by my windowspace:
http://img10.imageshack.**/img10/7769/img4984gu.jpg
From the outside
http://img7.imageshack.**/img7/2692/img4396p.jpg
Zoomed in
http://img842.imageshack.**/img842/5549/27449973.jpg