Gridfinity
thingiverse
For my gridfinity desk setup I wanted a USB port. I used an USB extension cord I had lying around.
Download Model from thingiverse
With this file you will be able to print Gridfinity with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Gridfinity .