Ever needed to pull your hair through the hole to fashion your hair? Here ya go!
This was based off some thing my relatives had and it broke so i just made a new one from which you can just use replaceable filament. Just thread 1.75mm filament through the hole and melt the ends and push with pliers or a table. the melted ends will prevent it from coming back through the hole. the loop can be as big as you want so its fully customizable. i printed this out of ABS because that's what I had on hand you can use any. I also included one that was separated down the middle if your printer struggles with circles. there is also a full one as well. As normal everything is open source and free to download. make sure to post your makes as remixes.

IMPORTANT
if you are making the two part version you do not have to flip it on the Y axis because it already is.