Check out the blue chair Mark Hamill is getting out of here, while putting down the T-16 Skyhopper Model, built by Colin Cantwell.
And now here's the profile view of a chair, designed by Antoni Gaudi, and build by Vico Magistretti in the late 60s/early 70s.
Strikingly similar isn't it? There are some key differences, but it's a little hard for me to ignore how closely they seem to match. I'm still searching for the variation, imitation, knockoff, tribute, or modification that actually appears in the movie. The Gaudi Chair itself did actually appear in the Sci-Fi Television show, Space 1999, which premiered around the time Star Wars was in pre-production.
Star Wars had a few other nods to Modern design, such as these Omkstak Chairs, Designed by Rodney Kinsman in the early 70s
Which appear in the Rebel Base.
(you can see them here, low-center frame)
It's interesting to me that Modern design in this era focused on an idea of futurism, which seems to have been realized to its greatest effect in the sci-fi movies of the day.