Insulin Pen Holder

I wanted something to keep all of my insulin pens organized in my fridge. I took inspiration from lordjustice17's holder (https://makerworld.com/en/models/481450?from=search#profileId-393278), but made my design from the ground up with a couple of goals:I wanted mine to be “universal” - it is not tailored to a specific shelf in my fridge;I wanted it to use less filament, so it has 2 parts that are printed separately - a base with small indents for the bottom of the pens, and a top which is just a shell to keep everything organized. I glued them together using superglue and it's been holding fine.I've also made it as small as it could be by staggering the rows of pens.I wanted it to store all of my insulin for 3 months (which is the interval at which I get my prescription refilled) - that is, 43 pens.I also wanted it to be easy to print - no overhangs, no bridging, no complex geometry. I printed mine using PLA, 3 walls/top/bottoms and 15% infill and it's sturdy enough th