The base of my globe broke, so I designed one with a threaded hole, but you can just glue it on if it's not compatible with your thread(you have to measure and maybe edit the hole) .
You can choose to print just the base (black filament), or if you prefer, you can embed the attached motifs (in my case I opted for filament that glows in the dark).
Was printed in PETG, 0.4 nozzle with a 0.2mm layer and 15% infill.