Insulin Pen Needle Holder

A small clipped case that can hold ~4 pen needles and a few alcohol swabs to an insulin pen (and fit in your pocket). Two sizes – one fits thinner pens (eg. Novolog and Lantus), one fits thicker pens (Basaglar and Humalog). I've printed it in PLA and it's seemed to hold up ok (YMMV).  I've had good luck with printing the lid flat with the textured ridges up and the case standing with the arched end up (and organic supports on the build plate only). If the lid fit is a little tight, run a utility knife in the grooves to remove any excess material.