When I was four, putting my pinky between the hinge side of the door when my mom wasn't paying attention. She closed the door. It was pretty painful, especially when the nail had to be removed, but not nearly as serious as any of your injuries.
Maybe slipping from the stairs in France at the age of 12, cutting open the entire length of my right shin was a little bit worse. I don't know, it wasn't that painful and didn't really leave a scar, because it wasn't a deep cut. Didn't even need stitches, but it bled for quite a bit.