This might not be a very pirate thing to do but I cancelled my Kindle Unlimited when I found out I could get all of them, for free, delivered to my Kindle app, from my city's library via Libby. Books, graphic novels, audiobooks, manga, and more, just there for the taking.
Libby (Overdrive) was sold to the Private Equity company that debt loaded and then bankrupted Toys 'R Us while giving their execs big money. Simon & Schuster books are also being sold to the same group. Since they took over Overdrive they've removed the easy ability to recommend books to your local library that you would like to see them buy for you, it'll only get worse from here sadly.
That said, I too am using this function quite a bit as well.
This is why I chose to go with kobo over kindle. You still have overdrive/libby access, but can also import and organize all of your books via calibre.
I moved from a major metro area to middle of forking nowhere several years ago. I kept my library cards from the metro area, which still work for Libby ebook and magazine downloads, while the local rural library is tied into a regional system for the occasional dead tree book.