Nendoroid base that is made for floating figures like the Elaina (from “Wandering Witch: The Journey of Elaina”) one shown in the photo.

Recommended Print Settings: 

• 0.1mm layer height
• Any white filament. Prusament White PETG used in the photo.
• Position the print with the hole facing the back of the print surface and change the PrusaSlicer “Seam position” setting to “Rear” to avoid seeing perimeter artifacts.