Cynical NOT - I have a little bit of a (?) also regarding cheap glasses, not sure if I am the only one that gets hit upon in the streets, but these type of glasses are on offer everywhere for next to nothing, unfortunately, my other half requires the "readily available" non script specs, which he purchases in Bali with a smile.....I am well aware of the John Fawcett Foundation, but this is trying to eliminate cataract blindness, not something you can bring along in empty space..
I think it's wonderful that people are asking questions on what to bring, I am just not sure I agree on OP suggestions...
Like the wooden puzzle suggestion, basic English books, stickers, crayons...cant go wrong