When something heavy, particularly if it might havs a sharp edge, DONT try to catch it
I was digging aroung in the basement, looking for a tool, when my smoothing plane fell off the shelf, and yeah, I tried to grab it. (someone extended the blade ALL the way - probably my 7 YO son, but)
Put a nice 2.5" long quite deep cut in my left pinkie.
Dropped the plane, ran upstairs, grabbed some papre towels, and went for direct pressure, walked next door, got a neighbor to come over and help me bandage the figer well enough to go to the ER and have it checked - no nerve/tendon dammage (yeah!) so just 3 stitches, and some bandages.
My family was not home, luckly a neighbor was.
I was not doing anything that would normally be considered dangerous (I won't use power tools while home alone, or even sharp hand tools) - I was just trying to get some tools setup, none of which were sharp/dangerous, but...)
Because of the location of the cut, they want me to keep the stitches in 2 weeks - joy, typing with 9 fingers is not fun