A lot of people in Sweden have a little shack in the woods somewhere, often by a lake, a "sommarstuga," or summer cabin. These cabins are primitive, and they generally have an outhouse. In that outhouse one very often finds a picture of the king or queen of Sweden- often both. It's usually a postcard size portrait, placed right where you can see it when you are sitting on the throne. Other outhouses- like at roadside pit stops and such- also often have the picture of the king and queen as well.
I never figured out where this tradition came from. It's a mysterious thing. If I ever have an outhouse, though, I'm putting a picture of the king of Sweden up inside.