Injuries. I've had a few of those. From more recent to past:
-Caught my hand between a table and a door on a machine at work. The knuckle still looks like it's swollen, even though this happened last summer. For a while, if I kept bending it a bunch, it would bother me, though I haven't had this happen lately (haven't really bent it much).
-Injuried a toe nail bad enough to get an infection that eventually sent me to a toe doctor and ended with the removal of the toe nail. Didn't hurt and didn't really bother me.
-Cut my little toe on my right foot on a bird cage right before work. Bandaged it, went to work and in the morning went to my doctor, who was not happy with me. He told me I should have gotten stitches. Oops. Still have a scar, though it's on the bottom of my foot, so I don't really mind it.
-Cut through a part at work into my hand with my big cutters. I had a pool of blood in my hand by the time they answered my buzzer. I asked the guy to get me a band-aid, he looked at my hand, and told me I could go do that myself. Washed it off, put a bandage on it, and went back to work. Still have a scar.
-Had a part on a machine I did not know how to take off. I grabbed it on the sprue and pulled. My hand slipped and I hit the side of my wrist along the thumb side on a bolt on the other side...a bolt that was about 400 degrees. Went and ran it under some water (ignoring the people who kept telling me to put it on ice, as water is better), then put some cream on it that's probably older then I am (but still works) and got put right back on that machine to learn how to run it properly (a burn+heat = ow). The skin is still discolored there. Was probably a second degree burn :-/
-When I was a little kiddie (probably about 5), my mom came outside and told me that lunch was ready. Was excited and was running up the steps when I fell and hit my cheek on the corner of the steps where they turned toward the house. Busted it right open. So Mom had to drive me to the local military hospital with me holding something to my face. And at the ER, the doc said I was one of the calmest kids he'd ever seen in a situation like that. I do not have a scar on the outside of my face, as by then they'd figured out they can stitch on the inside to keep the scaring there, so that's where it is.
Only other injury I've had that has had lasting effects is my shoulder when I fell over my dumb dog in the hallway (he hears you coming and he doesn't move...and I'm not the only one that's tripped over him or stepped on him, either). I have bursitis in that shoulder now. And I really hate weather changes >_<