Time to dig out the black light from the attic and throw on some Pink Floyd.

I remember seeing these as a kid in the late 70's, I tried finding them on Google to use a reference, but couldn't find anything, so instead I recreated these in Tinkercad.

Enjoy!

Hypnotic 1

Hypnotic 2

Hypnotic 3

L38.07mm W38.07 H3.8mm

You will need add a pause to the gcode to change filament colors on raised portion of the model.

Here is more information on how to add a pause in your slicer software.}

Prusa Slicer:

 https://help.prusa3d.com/article/insert-pause-or-custom-g-code-at-layer_120490

Cura:

 https://all3dp.com/2/cura-pause-at-height-how-to-do-it/