I found it extremely annoying that this simple yet very expensive (to buy) thing has not been posted anywhere. So I made my own based on the spec that I found somewhere.
J1772 is a charging standard for electric cars, the inlet is the part that is found on the car, and if you wanted a dummy inlet to simply plug in the charger to hang it up or keep crud out of the pins, be ready to fork out some $$$, but now you can just print it. Feel free to modify and re-post, but please refer to this original. Thanks.