Stairlifts are easy to remove and then you'd never know there had been one there. A lift is a pretty permanent addition and quite small. Also a lift is about 10 times the price of a stairlift. Personally I'd have a stairlift but I have quite wide stairs even if they do go round corners which adds greatly to the cost.
Passports not in the drawer I always keep them in. Turning the place upside down.