I can think of examples of all of these. But I did have siblings, burn myself bbq'ing, know people who worked in the local slaughterhouse (knife in the arm to get off work), know of a surgeon who made this terribly sad mistake, live in the UK (IRA letter bombs).
I knocked one of those quartz desklamps over on my bed when I was asleep. Set the blanket on fire, caused it to melt. Fortunately, I was awakened before I was injured. Not sure if that would count, though.
When I was younger, I had a commercial-grade stapler (the big ones that advertise stapling through N-hundred sheets at once) go into my pointer finger on my left hand. The resulting bone infection eroded all the bone in my fingertip, which was reconstructed later from "donor" bone.
Step one of the operation was getting taken back to a patient room, being given an IV (since I was not to eat or drink for 12hours before the operation), and waiting. After a few hours, a nurse walked in with a sharpie and wrote "NO" on my other hand.
Y93G2 Activity, grilling and smoking food
Y9286 Slaughter house as the place of occurrence of the external cause
Y6553 Performance of correct procedure (operation) on wrong side or body part
X962XXA Assault by letter bomb, initial encounter
X05XXXA Exposure to ignition or melting of nightwear, initial encounter