So out of curiosity I just went to Amazon.com. Because there really couldn’t be a Vandelay Industries t-shirt. After all, it’s been 20 years since Seinfeld went off the air. Who would care at this point?
To my surprise, there are dozens and dozens available, in all sorts of designs.
https://www.amazon.com/s?k=Vandelay+Industries+t-shirt&ref=nb_sb_noss
“it’s been 20 years since Seinfeld went off the air”
It’s not off the air. It’s on multiple times every day.