The Tesseract, also called a hypercube, has been in many books and movies. You don’t have to be a math geek to enjoy 4G geometry. AltDynamic has come up with a CNC machined version of it using 6061 aluminum. It is one solid piece, so there are no pieces to screw or glue together.
You can order these tesseracts in 3 sizes (from 1.9 to 2.9″). You can order these in raw, black, blue, and purple colors.