Hehe… I used to work at a hardware store where I was always getting new and interesting splinters and small slices from the various sharp implements we used and sold (a metal shaving from the key machine in my eye was the most painful, with metal shavings in my hands not far behind). Still, these were small, minor scratches. I now work at a fabric store. This resulted in a 2" long scar on my arm when I ran into a shelf.
I slipped in the shower once and no, I didn’t get hurt upon falling. I did get hurt when I failed to take note of my position in relation to the tub faucet before hurrying to get up. Thereby ramming my hip/butt into the faucet. It’s the kind where you pull down on the faucet to switch to the shower, and then turn the water off to switch back. I offer my bruised backside as evidence that you can also push the faucet back up to acheive the same result. Oh, yes, and grabbing the knobs to turn the water on/off is a bad idea when you are falling and trying to catch yourself. I turned the hot water on full blast and the cold off.
My favorite injury by non-dangerous object has to be the time I pierced my wrist. I had new earrings that had been bothering my ears (I have allergies to at least nickel, and I’m sure something else but IDK what… I stick to sterling or stainless now), so I took them out and put them on my desk. Pointy part up. And of course dropped one of the backs and couldn’t find it… but oh well, it wasn’t like I could wear them anymore anyway. I then proceeded to pay attention to the teacher until I moved my arm and something stung me. I looked down and discovered that I had laid my arm down on the earring that was missing its back. I removed the earring, got a band-aid and neosporin, and life went on, but since I was allergic to the earring, my wrist swelled up some.
My favorite injury ever (in retrospect) was the result of a handsaw… but as that is most decidedly NOT a harmless artifact I will leave that to your imagination.