Incredible Hulk Hitch Cap

thingiverse

Here is a sturdy Hitch Cap designed in the style of a mighty Hulk. This remix originates from https://www.thingiverse.com/thing:3014809. You might need to make some adjustments to the size (97-99%) depending on your hitch's specifications. Alternatively, you could use a 3D pen to draw an internal edge around two to three centimeters from the bottom of the cap so that it cannot slide off the hitch.