Humans have been putting animals on walls, using natural pigments, for a very long time.
The students studied the cave art of Lascaux, France as their masterwork for this project. The experience included entering a nearly-dark classroom lit only by a few candles, with ambient water dropping and other recorded cave sounds playing. The students lay down beneath their desks and drew animals with chalk on the undersides by candlelight.
The project is beans. When describing it to people, most of them seem to picture some sort of kindergarten-level macaroni art. They scoff and roll their eyes. How cute that the kiddies get to do a little art project. This is so much more than that.
In the picture above, #30 is glued to the door of one of the panels. The larger box around it represents the edge of the panel housing, with large bolts holding it in place. Pieces #23, #31, #29, #36, and #37 all have hinges shown with triangles.
The large light grey square in the middle is a large center piece that will have the title of the overall work. The empty black box is the other electrical panel, with hinges on #26, #27, #33, #41, #40, and #39. The door of the second electrical panel will have a paper explanation of the project.