I call these my Recycle Pots.
They originated from an assignment that I give my Introductory Students -- create 6 forms/containers using hand-built/press-molded/wheel-thrown elements. This is the second assignment of the semester, a crash course in creating bisque press-molds, working with slabs, and creating strange (but fun) shapes on the wheel.
I could make Recycle Pots all day, every day.
This pot was made using a bisque mold I made off of the plaster bucket, after pouring plaster molds.