When people go out of town on business trips they often end up stuck in their hotel rooms for hours if not days on end, and when they run out of movies to watch and minibar bottles to drink they get bored.
But rather than wandering down to the lobby and getting stuck at the bar with his coworkers a business traveler in Azerbaijan started leaving strange "gifts" on the bed for the housekeepers- and they loved it.
The challenger continued to leave silly sculptures in the room to amuse the housekeepers and after ten days of creating challenging sculptures out of stuff he found around his hotel room the challenger left on a high note.
See A Hotel Guest Started A VERY Creative Competition With The Housekeepers here