I like Mirabatek's pill box for my supplements. I needed to take three pill boxes on a trip, so I designed this little spring retention holder. I printed in petg so it could be springy. I broke it in two and added threads just so you can more easily print it without supports and then assemble. I went ahead and included 3x of the original pillbox to this .3mf so you can just print it all in one go and be done.