A small bookcase that has seen better days.
Bookcases are special shelves used to hold and store books. They must be strong enough to withstand the load of knowledge and power neatly (or messily) piled onto the shelves. But when a bookshelf can no longer support the information on its shelves... things turn ugly fast. The bigger the bookshelf, the more catastrophic the disaster.
Bookshelves that are not broken are found in bookstores and libraries, while those that have lived their lives are thrown into the landfill, never to see a book again.