Okay guys, this is it!
No parts required to make this one work!
Simply print, press fit to the Z rods and put your spool on it!
I may tweak it a little bit, but this is as simple as I can get it!
Print with 25% infill, and support material for the 2 holes that are on the bottom.
Press fit to the 12mm rods.
Drop a spool on it and enjoy!