Button/ zip up top and pull on trousers, and someone to help pull said trousers up!! Snacks, magazines, laptop, whatever entertainment you fancy while waiting around in your room. V pillow, throat sweets (might have a sore throat), hotel reservation details if you’re not an overnight case, any last minute questions/ concerns written down to remind you. Also, make sure they have all the details your surgeon will need – medical details, operation details etc. My hospital mucked all mine up and Mr K was not best pleased!
Good luck x