Filament Holder Ball Bearings CR10S PRO and many others.

The main Filament spool part, can be made with no support.
Ball bearings are the 22mm types from fidgetspinners, skateboards, street skates,
and many other toys, this means it is often free and easy to get the bearings.
hole in the bearings is 8mm for an M8 x 100mm bolt.
all the normal 200gr 500gr and 1kg spools fit perfectly on this low friction holder,
without the need for any screw of fixing to hazzle with, one hand spool change, fast and easy.

The spacer part needs support to print