Hearing Aid Battery Case for 312 batteries

Costco recently switched to childproof hearing aid battery packaging which means us older folks are really in trouble. I knew I was going to need a better solution for storing and carrying the 312 batteries so I looked online. I saw a few other designs but all of them seemed too big, bulky or complicated for my liking. I had designed several containers with flexible snap-on lids so I decided this would be the perfect approach for this project. I printed the battery case base out of clear PLA and the flexible lid out of red TPU. The base has a lip around the top that prints fine without support. The lid has an undercut for the snap fit that CURA decided needed support and it did an excellent job of creating it, plus it was quite easy to remove the support after printing. I have since printed these parts without support and they turn out just as good.
I printed the battery case base out of clear PLA and the flexible lid out of red TPU, printing both parts with the large flat surface face-down on the print bed. I printed the PLA at 210/60 and the TPU at 210/40. Both parts were printed with a .4mm nozzle in .2mm layers. I sliced using CURA scaling the STL file to 2540% as my STL files are in inches. My print times were about 15-20 minutes a piece.
I also designed a 4x battery case for stuffing a few extra batteries in the glove box or my overnight kit. It always seems that you need one at the most inopportune times.