This is a modification of the Massive Dragon Egg. I noticed while printing it that the overhangs inside the bottom didn't print well, so I corrected them. I also cut about ⅔ of the thread off the bottom, so it takes much less time and effort to screw/unscrew the top and bottom from each other, but it still closes quite securely.

This model is designed to fill an entire build plate at 100%. Due to how thin the walls are in the top half, I do NOT recommend trying to print any smaller than 50%.