Macbook Cord Clip
thingiverse
They're small pieces so not going to be a huge waste of plastic - start at this size and scale up in 1% increments until you get a nice snap. One side will be very tough, that'll be the side that stays clipped. The other will be a little easier and will be used to secure the cord when not in use.
Download Model from thingiverse
With this file you will be able to print Macbook Cord Clip 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 Macbook Cord Clip.