Most of my filament is managed inside Ikea 365 boxes with a PTFE tube coming out of the box for easy filament changes (unload, change box, just load new filament). See the attached photos for details.

This PTFE connector allows the PTFE tube coming out of the boxes to be easily attached to my Prusa Mini+ PTFE tube. The connector is shaped so it allows for easy slide on of the tube, which just happens while printing when I forget about it (the printer will pull the filament in which will slide the PTFE tube into the connector). The side for the printer's tube is slightly more narrow so it will be held in place.