This is a Mario Bob-omb turn key Extruder Motor visualizer.
Glue a neodymium magnet at the edge, similar to other motor visualizers (see provided picture)
I suggest using your slicer to bisect the model exactly in half, lengthwise, print, and join with super glue. Lots of surface area and very light so the bond should be very strong, plus its decorative, it shouldn't get banged around much.
If you make one, share a picture please! I did mine in gold silk but I'm curious how it looks with other colors. :)