I made a lot of the Stackable Slime object in many colors for my friend and I wanted to send him a box to store them (or whatever else) inside in the shape of another giant slime.

Print lid with supports. The lip of the inside of the lid is just loose enough that you can glue a thin piece of felt inside, making the cover fit firmly and securely. I finished mine off with some acrylic paint for the eyes and mouth.

Remixed using Microsoft 3D Builder.