I would invest said money for a few years, in order to make it a lot more money and now:
fund a trust for our local public library to become 100% independent from any power grab/censoring/book banning temptation. And, nope, it wouldn’t matter the slightest from what political side or from what moral ground said attempt would originate from.
Promote reading among the general population. Focusing on the younger generations, because they’re our future and, even though it’s starting to fade away, they’re supposed to be the ones willing to make the effort of learning and be educated, but I would also not exclusively cater to younger people. I mean, unlike with kids, I tend to think that given a chance a vast majority of adults would hardly change their behavior/opinions, as they’re already set in their path and most of them are way too proud to ever admit they could have been wrong, but I would still want to give them the opportunity.
10,000 is probably not enough. So:
Edit: typos.