I wanted to have some sleeping gas cylinders for the Raptor board game. I found this O2/CO2 gas cylinder and remixed to add the bubble with the sleeping "Z" like in the board game illustration. I also resized to be about 10mm square across bottom and 35mm tall (the bubble/text sticks out just a bit).
Amazon Basics PLA
Prints with no supports. I did use variable layer height to make the top and "shoulder" of the cylinders smoother.