Custom designed golf ball display with modular sections that allows you to expand your display as your collection grows. It is efficient with the filament use and has a really nice tight fit with the balls so could even go on your desk at work. 

I also designed a custom wall mount bracket. The intended use case is to snap the brackets onto either end of the bottom stand, use the stand as a platform to level and mark screw holes, then drill out/add anchors and mount. 

The CAD for the stand is on OnShape if you are interested in it or want to change the width etc, see link.

I was inspired by @Cano Customs golf ball stand, but didn't necessarily love the look of it and how much material it used.