SIMPLE roof spool holder for Prusa i3MK3 Enclosure

If you wanna use IKEA's Lack tables as enclosure, like in this project: https://www.thingiverse.com/thing:2864118, BUT you wanna stack 2 or even 3 MK3, then you must do something with spools. This is simple and quick solution. Move printer to the front and right, and place this holder to the upper table. All will fit perfectly.

There might be little problem with filament, when extruder is on maxed X and Z, but I can live with this risk ;)
EDIT: It can make problems, as you can see on the last photo.