Though Amazon is a behemoth today, it started small and Bezos had to be frugal and strategic when starting up, right down to office furniture. In order to get inexpensive desks for himself and some of the earliest employees, he constructed them himself, using wooden doors and four-by-four planks for the legs. Those desks became something of a tradition, and Bezos and many employees are using a variation on those original desks more than 20 years later. According to a recent blog post, Amazon even created the Door Desk Award to honor “well-built ideas that help deliver low prices to customers.”
https://www.entrepreneur.com/slideshow/298895