A simple hanger with multiple hooks and snap fitting and ability to rotate freely.  The snap fit is very tight and requires some force, but worked fine on my X1C. 

I added a flat bottom to avoid the need for supports.  Also printed in PLA with no issues so far, PETG might give it more flexibility. 

NOTE - Some users have reported issues with the snap fitting and hangers breaking. Due to this, use it with light loads for now until myself or another user can create a stronger version.  I am already working on one strong enough for filaments, so when that is complete you can check out that model.