A Penguin Donkey is a small bookcase that was first designed to hold the new paperback books in 1939. My one is the second version designed in 1963 by Ernest Race. In contrast to the original design this bookcase is white and features a flat top so it can be used as a table as well. The bookcase became known as the Penguin Donkey because it has panniers and four legs.
The bookcases were and still are, made by Isokon. Mine is an original example, but reproductions are available.
I will enjoy finding vintage Penguin books to fill it up, although I do have quite a few already. It is also a good excuse to collect other Penguin books related items.
References
http://www.vam.ac.uk/collections/furniture/stories/donkey/index.html