I've been using an Onyx Boox Note with inoreader for a few months, and it's not super polished, but it's a great device if you're interested in an e-ink RSS reader!
It runs de-googled Android out of the box, so it can run most apps. Some of my other favorite apps to use on it are it's integrated ebook reader with pen support and integrated machine translators, F-Droid, Firefox, Nextcloud to sync my ebook collection with Calibre, and Materialistic for reading HN.
I've also got Twidere for Twitter, Frost for Facebook, Instagram, Telegram, Messenger and Goodreads on it, but I'm trying to wean myself off of those platforms.