Ooh boy. Recommending books is a challenge unless you know the person very well, but here are some that I have enjoyed:
Children of Men by PD James - this is one of my favorite books of all time. It’s quite different from the movie. I think the movie is fine, but the book is much better.
Lamb: The Gospel According to Biff, Christ’s Childhood Pal by Christopher Moore Whether or not you are religious, Lamb is a great book, and one of Moore’s best.
Traveling Mercies by Anne Lamott. - This is her autobiography and journey of faith. I found it unique and fascinating.
The Talisman by Stephen King and Peter Straub Another all-time favorite book. If you’ve never read Stephen King, you’re missing out. He’s a fantastic storywriter, and this is one of his best.
Sarah Vowell’s The Wordy Shipmates is great, as is Assassination Vacation and The Partly Cloudy Patriot. There are some others I can’t remember the names of. I am NOT usually into history, but she really makes it interesting.
I have heard that Becoming by Michelle Obama is very good. I have purchased it, but have not read it yet myself.
Wishful Drinking and The Princess Diarist by Carrie Fisher were both very good.
Mere Christianity by C.S. Lewis is a classic.
As You Wish: Inconceivable Tales from the Making of The Princess Bride by Cary Elwes was a very fun look back at the movie, which is my wife’s favorite.
The Martian by Andy Weir was good enough that they made it into a movie. As usual, the book was better.
American Gods by Neil Gaiman is another classic.
Bloodsucking Fiends, You Suck, and Bite Me by Christopher Moore is a fun and excellent trilogy about vampires that has nothing to do with those other terrible vampire books that almost ruined vampires for everyone.
Mary Roach’s Stiff: The Curious Lives of Human Cadavers and Bonk: The Curious Coupling of Science and Sex were both very interesting.
Born Standing Up: A Comic’s Life by Steve Martin was wonderful.
I love pretty much everything David Sedaris writes, and hearing him read his own writing is even better.
The great thing about Audible is their customer service is perhaps the best of any company I’ve ever dealt with. Don’t like a book? Return it! They’ll happily exchange them for you.