Let's see...
Knocked a tooth out when I was in 5th grade; stepped over a kid on the field at the same time that he stood up.
Scar on my chin; I was pulling a nail with a crowbar when the nail head broke, and the crowbar jammed up into my chin. Then, a couple years later, I had a car accident and split my scar open on the steering wheel. :)
Knee used to hurt in cold weather because I was swinging a hammer once, missed the nail, and hit my knee HARD instead.
Scar on my thumb from when I was cutting wood with a power saw, and the saw grabbed the wood, pulling my hand into the saw. I was wearing gloves, and all I could see was blood. Did NOT want to see trhe results underneath, but when i pulled the glove off, thankfully I still had my thumb. This was years ago, and I've finally got most of the feeling back in my thumb. :)
Years before I cut that thumb, I jammed a sliver under that thumbnail. The sliver ran from the tip of the nail all the way to the first knuckle. :)
Years ago, I had both wrists badly sprained. I fell on one wrist while sparring, and about a week or so later, went over the handlebars on my bike when I took a curb at the wrong angle, and sprained the other wrist. Took months before they healed.
Broke a knuckle when I broke a board in Tae Kwon Do.
Whiplash injury remaining from when my car was rear-ended.
Then there's the time I fell while playing footie in the snow on a mountaintop in Serbia. Landed on my back, and when I tried to get up, I couldn't; I had dislocated my shoulder. I popped it back in, but it dislocated seven times in two days. The last time, I finally had to go to the hospital. Traveled home through Europe with one arm and four bags. :)
Those are the ones I remember off the top of my head...