Haven't you ever noticed that none of the good things dropped off ever make it out the front door of Good Will? Anything good is stolen out the back door and taken home or sold. Contribute directly to the hospital in your area, I think many of them have something like you are talking about managed by volunteers.

This is one such Patient Library

El Camino Volunteer Staffed Patient Library

Or maybe have a mobile library that services such sites and rotates their entire contents from one site to the next every four months or so. That would be a more efficient use of resources, at least at facilities where there are long-term patients.