Someone was having a joke. I saved the glasses from 2017. The information all over the internet wouldn't give 100% safety for reusing glasses. I figured it's 'just' my eyes and used new glasses.

open mouth-insert foot? Glasses have a shelf life of three years.

Our library is collecting them.

I think far more rewarding would be to store them in a box that might be left 'accidentally' in the living room on a day when it is raining and the grandkids can't go outside and play. Rummaging through the box, they might say 'what are these Grandma (or Grandpa)?, giving you a chance to talk about the wonders of the eclipse. Maybe even include a book or articles about eclipses in your rainy day box. And (if they have been judged 100% safe) give them to the grandkids for their eclipses, which may happen after you pass away. Build good memories.