I wanted a container that I could put several types of medication (Advil, Tylenol, StayAwake, etc.) in to put in my backpack or bag. It fits a wide mouth mason jar lid, I ordered some on amazon that are one piece and have a silicone seal under the lid.

Ideally this should be printed in something with a fiber reinforcement to keep it from shrinking. I used Bambu CF-PLA.