Lots of various flying fragments not worth mentioning. But three that are (somewhat?) worth sharing.
Only been slide bitten once, and I'm proud to say that it was by the most slide bite'n'est handgun ever made: I put one magazine through a Walther PPK (/s?) and bloodied up my hand. Never done it with any other handgun.
Early in my shooting life, I was trying a sitting position with a small bore rifle... shorts and tennis shoes, no socks, caught a piece of hot brass in my shoe that I couldn't get out... burned the top of my foot and left a nice scar. The rifle-- grade one Browning, with the bottom eject. I was asking for it!
Dumbest injury I've ever gotten from any kind of shooting: Took a primed but otherwise empty 12-gauge shell in to the basement and took aim with a BB gun. Don't recall how many shots before I hit it, but I did. It popped, then it removed itself from the shell at great speed and embedded itself in my calf. I had to pull the bloody thing out of my leg.
On another note... when I was in high school, I was on an indoor range, an outdoor range or a skeet field for 5 out of every 7 days, literally. Shooting was pretty much ALL that I did. Never for any of that did I ever wear shooting glasses. No protective eye wear of any sort. At some point in my 20s, I had an epiphany. Never a close call, just wised up.
These days, I would sooner shoot buck naked then to go shooting without my eye protection. Wearing them is as natural as breathing or walking.