My daughter used to have a Jeep and I had printed a Jeep Wave hitch cover for her I found here. She just got a new Bronco, and asked for a Hello Kitty Bow to match her license plates. I cheated and used a design for a necklace (thank you @jennnergy). I didn't bother removing the holes because I am lazy.
Note - I made the hitch part a 2" square. Her receiver was slightly rounded so I had to file down the corners - I did not do this in the STL because, again, I am lazy :)
hello_kitty_hitch.stl | 83.7KB |