Obviously it's not too serious, since I'm here writing, I'm fully mobile, etc.
Yesterday I was moving a spare engine I have for my Sentra SE-R. Put it and the hoist into the borrowed truck, drove to the garage, pulled the hoist out and reassembled it (rather harder solo than with a helper), picked the engine up out of the truck, rolled the engine and hoist over to the garage apron and then started pulling it up the apron. When the front wheels get to the transition it sticks so I have to sort of give it a big tug to get it up and over. Do this, but I give it a big tug right into my left foot. The back of the hoist (with engine, so a few hundred pounds moving at a foot per second or so) nails me squarely in the big toe. Ow!! Take foot out of shoe, starts bleeding like a mofo (looks that way, anyway) so I hobble over to the truck to look for a towel, etc. eventually get a roll of TP from a neighbor who happened to be leaving to stanch bleeding. Impact separated about 2/3 of the toenail from its bed and put a big cut in the front of the toe, too. Waited for my GF and her dad to show up (they were on the way anyway, and it was his truck) then drove to nearby hospital since I figured this was something they could patch up better than I could. Rest of the evening shot, sitting in the ER instead of at my friends' party that I was looking forward to.
No serious injury, but it is kind of a PITA. All because I was wearing...boat shoes! I love boat shoes and have worn them as a default non-winter shoe for about 30 years. But not the best choice of footwear for shop work. (Duh!) (GF said that the first thing her dad said when she told him was, "I bet he was wearing boat shoes") Even if I had been wearing my Airwalks I probably would have avoided most of the injury due to the thicker soles that would have taken some of the impact. I don't have steel-toed anything but I think I'll be getting some just because.
Also, eye protection. Made recent reminder to self to keep a couple pair of safety glasses in the garage. This incident sort of amplified that. I wear eyeglasses, but that's not enough to keep stuff out of your eyes.
We are very safety-conscious at work, where there is a big shop. I have always taken care of things like good jacking protocol - never, ever get under a car unless it's well-supported on jack stands, use good support points, make sure floor even and can take it, keep jack under the car as backup, put wheels under body as 2nd backup, etc.
I took care to not overstress my back, etc. as I worked with the hoist. I thought I was taking care when rolling it into the garage (in retrospect, pushing would have been better than pulling) But I didn't think of everything, as I learned the painful way.
If you've been getting lazy about some safety habit, let this be a reminder to stop