I like to record and rehearse using IEM's.
So I needed a place to keep them when not in use.
The openings are 7/16" [11.1 mm] so check to ensure proper fit with your buds.
You can drill a hole in a piece of wood or plastic to use as a guage.
TIP: you can print it tilted back a bit to make him look a bit more chill.
The author remixed this model.
I added openings to hold a pair of in ear monitors.