A classical piece of mathematical art is a glass klein bottle. I believe it was Spring 2019, there was a glass art workshop that I went to at Georgia Tech were I made the following glass klein bottle, and glass Möbius strip (although my glass versions might be different from the classical version).
The term Bottle in Klein bottle (Klein Flasche) is actually a translation error for the German word for surface (Oberfläche).
Above is a picture of my glass Klein bottle.
Why did the chicken cross the Möbius Strip? To get to the same side!
Above is a picture of my glass Möbius strip.