Interesting subject as I'll be going in for a procedure in about a month with a 10-21 day stay. Here's my list:

Blanket
Tush Cush Cushion

Laptop Computer
Extension Cord
Extended Screen
USB Power Cube/Cord
Bluetooth Trackball

Reading Glasses
Kindle

Cell Phone Charger
Flashlight
Earplugs

Toiletries Kit
Toothpaste
Toothbrush Electric
Toothbrush Manual
Tongue Cleaner
GUM Tooth Picks

Electric Shaver
Electric Mini-Shaver
Deodorant
Shampoo
Shower Head, Wrenches and Teflon Tape

Hand Sanitizer w/ Aloe
Good T.P.
Good Kleenex
Dude Wipes

Relief Band, batteries and conductivity gel (https://reliefband.com/)

Underpants
Nylon Swim Shorts
Lightweight Loose Pants
Button Down Short Sleeve Shirts
Non-Slip Socks
Short Socks
Athletic Shoes

As well, we will have a refer in the room and access to a Microwave so Sue will be bringing snacks and such and since the food sucks, most of my meals will be brought in by Sue. Fun and games...