I needed a free-standing spool holder for my X1 Carbon since I don't have room behind it to use the built-in one. Which honestly isn't that great anyway. It also was designed to go (aesthetically) with my filament storage rack Filament Storage - Free Standing by JohnMartin | Download free STL model | Printables.com
You will need two 608 skateboard bearings.
The author marked this model as their own original creation.