A small notebook for handovers, lip balm, pocket tissues, pen torch for neuro obs, pens, fob watch-all on you.
A rucksack with a plastic water bottle with sports lid, bamboo coffee cup with lid, tea bags in a little tupperware box (hospital ones are grim), painkillers, phone charger, snacks, lunch box, spork, headphones, spare pens, sanitary products, hair bobbles, dry shampoo and deodorant.
This might seem excessive but I regularly have needed stuff from my bag over the years, (or my colleagues are stealing it from me!).