Cable holder to keep the cables from getting int he way of the stop switch on right side.
Print in whatever. I used ABS 0.2mm layer height and simplify3d stock settings.
I used some 3M Double sided tape from home depot to stick it to the printer wall.
Left enough room that the cables can slide up and down and you can still pop the cables out without having to pull up the sticky tape.
Created with Moment of Inspiration. ( file included )