It's just an egg cup with a bit of extra whimsy, inspired by some sketches from my wife. There are six cups plated in the attached 3MF, but you can easily enough pack at least 14 on a plate if you reduce the spacing and allow rotations.
They look great with a shiny filament and printed at a low layer height. I'd suggest sealing them with a glossy, food-safe acrylic/polyurethane before using.
I tried to be a little clever with hiding the seams by strategically cutting ridges into the right places in the design. (Although eventually I hacked up my own copy of Prusa Slicer to do an even better job hiding seams.)
The author marked this model as their own original creation.