Took the Multi-Use cases created by JamesThePrinter and Dieti and stretched them out to fit a 160mm insulin pen. Great option instead of just throwing them into my shaving kit for a trip. The small case holds up to 4 pens and the large holds 8 pens. Also, I found that an M2x16mm screw works well to attach the box and lid.
The author remixed this model.