Watched Office Space over the weekend, and found this bit of trivia at IMDB.com:

The red Swingline stapler that Milton was so afraid of having taken away was never actually manufactured by the Swingline company; it was instead painted red by a crew member in the props department. However, following the movie's success on video as a cult film, the demand for red Swingline staplers (apparently as a symbol of quiet rebellion among cubicle-bound employees) was so great that the company began to sell the red Swingline stapler on its website.