Thread and Bobbin Holders for Elfa Pegboard System

This is based on a few different thread holders that I've seen in other places, but designed to fit in an Elfa pegboard system. The fit has a slight amount of wiggle room, but with the threads held on, they stay on pretty well even when bumped. There are two plates made for this: one plate with a single holder, or a plate holding 12. I've done some orienting to fit them in place that the auto-arrange won't do, which is why there are two versions.