I, along with my co-founder, are working on a shopping platform for furniture and decor seen on the set of movies and TV shows: https://www.seenonset.com
Startups definitely like to deck out their offices with some of the nicer high-end designs. Even Y Combinator's home page image carousel has the likes of the Bertoia Diamond Chair and the Nelson Saucer Pendant Lamp on show! Though a lot of startups go for the replica route - I know Airbnb went with replicas in their Dublin office.
The show Silicon Valley (https://www.seenonset.com/tvshows/174/silicon-valley) is a great example of what we do.