Parametric Cable Management Hooks

Just load up the f3d file into Fusion 360, and click Modify → Change Parameters and edit all the things there.  If you aren't sure what they do, just make the change, and you can see what it did right away. 

And for those of you who have never used f360, just go to the bodies on the left, and right click on cableManagementHook and click Save Mesh. That will generate the STL. If you aren't sure what they do, just make the change, and you can see what it did right away. 

You can even add more holes. I've also tried to add some checks in there to prevent issues. Like if you make the hole wall too small, but you want a lot of holes, it will automatically make it longer to fit the holes. 

The ones in the picture are using the default settings from the file. It's able to hold all the cables seen, and I would imagine it could hold a lot more. But if you want to be safe, just make it thicker. And you could probably make the opening really small since it flexes. And also, screwing it into the stud with just one screw seems to be stable as well. I'm sure I could rotate it, but it would take a good bit of force. Be sure to print with more wall for strength, in the orientation of the stl.