I bought this glass sphere that had an engraving and it was supposed to come with a stand that would act as a light, that would make the engraving stand out. However it came without the stand so I created my own.

The diameter of my glass sphere is 6cm but it should work for some larger ones as well, just that they will sit higher in the hole. I used a 12V simple IR remote controller that I had lying around and a piece of unused RGB LED strip. I glued the LED strip to the bottom and used a piece of A4 paper as a diffusion layer so that the sphere wouldn't project the sharp sources of light on my ceiling. The bigger hole is for the 12V power adapter that is coming out of my controller, the smaller one is for the IR receiver diode.
M4 bolts should fit the bottom holes and they act as legs too.

I did one mistake when printing mine and that is using white PLA which is quite transparent and so the light leaks through. I'd advise anyone to use coloured filament that stops the light. The side walls are multiple of my nozzle width (0.4) and thus there's no infill. The top does have some infill since I designed it to be thicker for the sphere to sit firmly in the hole.
This is a work-in-progress and I might add updated files if I update parts of the model.

Added v4 version, which now fits M3 (4.5 mm) heat inserts into the body. The bottom is attached by M3x10 bolts and uses separately printed legs so that the whole assembly now rests on plastic. Furthermore inside features a skirt that I used for attaching the diffuser sheet which creates better lighting conditions. Also added ribs on the bottom as on original the heat from the LED strip started degrading the bottom plate. The theory is that this way the heat transfer to the plastic body is significantly reduced and if the plastic degrades and cracks it's gonna be mostly just the ribs inside.

Creality

Ender-3 V3 KE

No

Yes

15%