Hi all, I remixed NoWayOut1980's original file to support a slightly larger thread, and then also created a version that doesn't have the bobbin on the bottom. It works with a variety of different sized bobbins, and I've found printing in PETG was a little bit better because there's a bit more elasticity to the print.
Not the most space efficient if you've got a lot of spools, but we were looking for a way to organize active spools in a project!