Amp-fx 4 channel Guitar Junctionbox, Patchbox, Patchbay, Breakoutbox, Terminalbox for your pedalboard.
I made a send/return patch box that screwed to a Pedaltrain frame, giving the user a single point of access for all cabling on the pedal board. : r/guitarpedals
Build a DIY Pedalboard I/O Box - Effects - Harmony Central
Custom Buffered Pedalboard Interface – The Rig Doctor Inc.