Here is the gadget I made to manage my charging cables. It's pretty simple, it slides over the edge of your table and has slots for three cables. It's been working nicely with all the cables I've tried so far. Two versions here: 25 mm and 15 mm for different thickness tables.

It should be straight forward for someone to create an OpenSCAD customizer for this, but I'll leave that up to someone else for now!

Enjoy