Our department has a large number of McGrath video laryngoscopes. The battery packs were stored in the anesthesia tech room as follows:

This seemed like a poor way to store batteries that cost $75 each. I Designed and 3D printed a tray to hold the batteries; the goal being to provide better organization, improved accessibility, and assist the techs with inventory/ordering. Here is the 3D design:

And here is the final printed product: