While I myself am legally blind, I also have family and friends who are. Last year I was trying to find a gift for my SO who is also legally blind. We both have a similar condition but she is losing the rest of her vision quickly and I wanted to get her something that she could still enjoy as she continues losing sight. I actually ended up getting something on Etsy for her that she really liked. It was a $1 by $1 that I had customized with an inside joke. I think it cost me something like $25 USD plus $5 for shipping in the US and it was at my door in under three weeks. It was super high quality, my SO loved it, and it was personal which I think made it that much better. There's tons of Braille related things on Etsy that you may find interesting, I'd check it out.

if he likes books make them audio books. If he doesn't have anything to listen to an audio book on, get them a cheap tablet for the likes of audible. or even a headphone based cd player. or some kind of stereo.
I've asked for a pc game for this christmas. true, I won't see any of it, but i'm married so will play it with my wife.

is he a fan of apple or android? you could get him an iTunes or google play gift card. Then he could buy books, music, games, etc etc.

Yeah don't get him braille books. Just get him whatever his hobby is; isn't that what everyone does when they give a person a gift? But yeah, no braille books haha.

Honestly the same as everyone else. Does he have a hobby or special interest?