Magnifiers are sold at some office supply stores and at stores that specialize in aids for people who are blind or who have low-vision. A Perkins Brailler is a sturdy, seven-keyed typewriter that embosses Braille on paper. Perkins Braillers were popular items in every accessible library I visited. A tape recorder works as a note-taking machine for people who cannot use their hands, are blind, or have certain learning disabilities. Not every person who uses a wheelchair needs it all the time.
Many individuals use a wheelchair only after they tire.
Medical and hospital supply stores sell used, manual wheelchairs for a few hundred dollars. Walker with a hanging bin for books. Like a wheelchair, a walker helps a person whose energy is ebbing to continue on with their activities. A hanging bin for the walker is a convenient place to carry books. Provide desk lamps.