Here are the files for my Pentagram Cauldron,
I designed it to fit a Adafruit Circuit Playground then the "Filling" (Lid) to be printed in transparent fillament (or in Resin if you are lucky) to diffuse the Neopixels,
though a little bundle of String lights could give a nice effect too.
Note:- The Cauldron can be flipped over and printed on the rim, this way it won't need any supports
I hope you enjoy and