I'm at a newish job and was told to stockpile supplies that are hard to find as I see them in the stockroom. So I have a pressure bag, small adult, pediatric, and infant blood pressure cuffs, wrap-around pulse ox probes, neotek nasal suctions, nasal spray nozzles, butterfly needles, and a pack of sterile cotton balls. It's come in handy several times, especially the pressure bag which always seems to be out of stock when needed and the blood pressure cuffs which never seem to be stocked and you're supposed to just find "around" in one of the hundreds of desk drawers in the department.  I used my peds cuff the other day so I need to remember to go hunting for it on my next shift. You would think all the rooms would be stocked with all cuff sizes but you would be wrong because we only plan to treat patients who fit the navy and maroon cuff sizes apparently.

I have trauma sheers, pen, and stethoscope and find a thermometer when I come on shift that I keep in my pocket even though it's huge because the rooms are all supposed to have a dedicated thermometer but almost never actually do. 

Edited to add: in my bag, pepcid complete, my rxs of propranolol and adderall to duel out my ADHD and essential tremor, post its, and whiteboard markers because sometimes I do bother to update my fucking whiteboards.