I created some zipper pulls, found here: https://www.thingiverse.com/thing:2964645. These worked so I decided to make Skully Pulls. Jus like the others, this is designed to use with #95 paracord.

These are the same exact beads used in the Skully Begleri, found here: https://www.thingiverse.com/thing:2964708

Update 7/16/18: I refined the design a bit and uploaded higher resolution file, which is probably over-kill for this but oh well. If you have download before now, I suggest downloading again.