So, I was designing at 11 o’clock at night (like you do) and I thought I should finally make my own cable management. And this came out…perfect, first try! I only printed one of each, thinking it would fail miserably, but to my surprise nothing was wrong. 

I hope these can help you too in managing cables on your printer (these clips will work with other printers that have aluminum extrusions similar to an Ender 3) 

(Sorry about photo quality)