Not what you were looking for? See Lever.
The Bookshelf Lever itself is a thin black cuboid. Before the lever is pulled, it faces right. After it has been pulled, it faces to the left. Behind it is a stone/brick wall, framed with a dark gray material. (Probably also stone)
Easter Egg Edit
The main usage of this lever is to give the Player access to the Bookshelf Room. Go to Bedroom 2 and knock down the Painting. A lever will be behind it shown to the right. Pull it, and the bookshelf in Bedroom 2 will move to the right, revealing the Bookshelf Room.
- Before Update 1.5, there was nothing behind the Painting in Bedroom 2.
- Strange enough, the sound when the Player pull the lever down doesn't alert Granny.