Basically all desks and tables at Amazon are still door desks, based on the company's origins:

* http://glinden.blogspot.com/2006/01/early-amazon-door-desks....

* http://www.fastcompany.com/magazine/85/bezos_2.html

It is questionable whether in the age of IKEA, the door desk is still truly frugal, but it is a very tangible reminder of the principle. Very tangible, very sturdy.