I wanted to see my replacement wheels more easily without keeping them in the bag they shipped in, and letting the rattle around in a plastic container didn't seem like that great of a solution either. So, a little tinkering later, I have this.
Fits standard 11mm diecast car wheels snugly. Designed so the axles will sink into the space below the wheels and not get bent. Standard 11mm wheels (with rubber tires) will fit snug but pop out easy enough when pressed from the bottom.
Print at 101% for looser fit. Lightning infill with sufficient perimeters makes a sturdy hollow model that works just fine.
The author marked this model as their own original creation.