The luxury of a home library can only be topped with a classic rolling ladder on casters, which can transform a room with ceiling-high shelving into a private library. The ladder is attached to a track above the shelves with a top bracket, making it possible to reach high shelves. Many also use a library ladder for storage in a kitchen pantry, basement cellar, or garage loft, where the high space is difficult to reach.
A good place to learn more about a library ladder is https://www.putnamrollingladder.com, a website where you can see the options and choices of ladders in material like wood or metal and designed with a handrail for safety.
