Designed to hold 4 usb-c cables I have by the plug (12mm wide, 8mm deep, 28mm high, 6mm diameter strain relief), and fit on the tabletop edge of my desk (around 25mm thick).
Holds on to the desk with a tiny bit of double-sided tape on the desk edge.
Printed in very coarse settings in around 1h30m on my mk3s.
If you need slightly different dimensions, adjusting these through parameters in the FreeCAD model should be easy enough.
The author marked this model as their own original creation.