This simple little model can be printed and installed fairly quickly.
On our MK8 extruder, you can remove the M4 screw which serves as a spring seat on the frame. Attach this over the hole, and replace the M4 screw. A zip tie may be used to pull the top and bottom together. I'll likely refine this more, but this is a quick cable holder, and it's handy to support the additional cable on our ABL sensor. TPU would be a great material for this. PLA can be a little stiff, but it will also work well.