Thought it would be interesting to post a customizer with a shape based on a moebius strip, but with square, hexagon, and star cross-sections rather than the classic rectangle/strip.
I used an OpenSCAD library from user JustinSDK on Github called dotSCAD:
In order to be compatible with customizer I bundled in all the necessary code into the OpenSCAD file including the license statements from each section of code. Thanks to JustinSDK. By the way, I made no modifications to his original code.
Added revised version of "BUNDLED impossible torus.scad" which correctly commented out lines to prevent errors related to missing libraries.
See the orientation I printed the hexagon shape with, which I think resulted in the best print quality. Printing the star shape is probably pretty difficult unless your supports work very well, but could work well on a resin printer.