My recommendation (in addition to the specific technology advice on this thread) is to connect (or help him connect) with an organization that helps blind folks adapt to blindness and specializes in using and training folks in using assistive technology.

If you are in the Bay Area, an organization like lighthouse for the blind would be a good place to start: https://lighthouse-sf.org/about/getting-started/ -- there are many regional organizations similar to this filled with good people who want to help.

Or: https://nfb.org/programs-services

Organizations like NFB and Lighthouse for the blind offer rehabilitation services and training, and might be able to provide some recommendations as well.

Also, you likely already know this, but there are many degrees of legal blindness, so the technology tooling varies based on specific challenge to overcome, and only 10% of the blind population knows braille.

If you really want to go down the technology rabbit hole, the CSUN conference in March is like the CES for assistive technology: https://www.csun.edu/cod/conference/sessions/

Assistive tech is a pretty fascinating area. I expect this area to grow as we have more aging tech savvy folks who want to keep using technology as they age.