Charles just sent me the popular packing peanuts prank. Unfortunately or maybe it is fortunately, we never had access to styrofoam peanuts. Plus we were always too cheap to buy any supplies, the thrill of doing it on the cheap. :)
Here's what Charles sent me, good job on this one, looks great!
My supervisor had gone to California for a couple of weeks and the Friday before he returned we were bored and decided to play a prank on him. We drove down to a local packing supply store and purchased 3 big bags of peanuts. Then we built a box into his window and filled the peanuts between the box and the window. The effect on the outside was so convincing he almost fell into his office. He came in early on Monday and after seeing the peanuts he figured he'd just have to push his door in really hard to open in. He was really surprised when the door opened without any trouble.
p.s. I think ultimately the prank was on all of us because his first job
for us on Monday was cleaning up the mess we had made.