Your local Lions Club might take them.

Wow mine don’t last long enough to be donated.

I know in Canada, the red cross accepts donations of used medical devices for assistance in daily living. I think it is more mobility aids though such as walkers.

I am not sure if the American equivalent to the Canadian Red Cross would accept such a donation.

Local schools or blind places. Blind organizations they may have a store but sometimes mobility instructors may be grateful to have an old cane someone can donate to give to a student in real dire need.

I make "glam canes" for my SO who is a blind performer, if they're still functional I'm happy to take them off your hands rather than buying new ones to decorate! DM me