Phone, maybe second phone, some form of iems/earbuds, money, keys, various writing instruments(pens/markers), my film camera, an 8bitdo controller, a folding keyboard/trackpad thing, umbrella, jacket, water bottle, towel, Sometimes a change of clothes, couple tools, pokewalker, and a hair brush/hair ties/bobby pins.
Afaik, you can just download windows and run it, you’ll just get an “activate windows” prompt that might be annoying. It’s great if you just want to try something out if you need windows to update firmware of a peripheral.
Backspace, because my cat likes to step on my keyboard and then characters are often left in the password field that need cleared.
They are pretty mid in my opinion. Worth trying to see if you like them though.