1) Trauma shears. Caveat: DO NOT WASTE YOUR MONEY ON RAPTORS. Yes, they will make you look like the badass ED RN you are. But they will get lost/permanently borrowed and then you're out $70. (LOST RAPTORS is a recurring post on our ED's Facebook group.) I have a couple pairs of $8 black trauma shears from Amazon
in my locker that also look badass, but if they walk off, I'm not sad or angry at my coworkers.
2) A good, but inexpensive watch that you only wear to work. It seems like 2/3rds of my department wears Apple Watches, which kind of boggles the mind. I have an Apple Watch, but it goes nowhere near the ED. Occasionally, I get blood on my watch. Or a patient sneezes/poops/pees/vomits on me. I don't want my nice $400 watch to get someone me else's body fluids on it. Timex Ironman it is.
3) A box of Sharpies kept in your locker/bag. You will lose them.
4) A box of non-gel pens. Our lab has refused samples that were time-stamped with a gel pen.
5) Your ears.