@MararoMakes_371070 inspired this variable-diameter koozie. https://www.printables.com/model/955371-paddleboardkayakcanoe-can-

I wanted a solution that could work with bottles/cans within a 2.4in - 3in diameter. My design has 10% infill and one perimeter to allow ease of printing and more flexibility in the design. I haven't tested it for a long time so I'm not sure of the durability (especially with larger cans/bottles).  I'm open to suggestions for improvements!