BoingBoing reader Neil writes,
The BoingBoing entry about the Post-It notes prank reminded me of one we pulled at work several years ago around Easter. Instead of Post-It notes we used Marshmallow Peeps. Lots and lots of Marshallow Peeps.
[snip from website:]"We did mail Just Born, manufacturers of Peeps, but sadly they never got back to us. The peeps wound up staying in the office for about two years, through at least two occupant changes. Even six months after they were up we had people coming by and eating them off the ceiling. Ugh."