Origami Hunting
(n.) A sport in which numerous people would make origami peace cranes, seals, pigs and other such animals and place them in inconspicuous places, that, if seen, are in plain view. Best played in work places or in schools; the winner is the person who places the most origami without them being removed. Origami placed outdoors without being disfigured are worth two origamis.
"John and I decided to play a game of Origami Hunting. I nearly won, but Mrs. Copperbottom found my origami replica of the Eiffel Tower on top of the OHP at the last minute."