One time i was using one of those ton-in-one tools with a pliers on one end. Trying to remove an led from a lightsaber circuit, i missed the led, snapped it shut right on the fold of skin under all my fingers on the inside of my hand. It took a minute to get the dumb thing un-clamped because it was never greased lol.
Injury #2: Trying to snap a tiny circuit board off of something, it split down the middle, separating the 2 layers of the board. One of the layers stuck out like a dagger, slid into the front of my thumb, and then went through to the point where it was trying to poke out through the nail