My wife enjoys it when I read to her, especially while she gets ready for work. For this purpose, the ideal book is easy to pick up and put down. With only 10-15 minutes per day, it's not worth following a plot. Books with very short stories or entries like trivia and quotations work well. Along those lines, I recently finished reading The Book of Classic Insults, edited by Tom Steele.
As such collections go, it's fairly entertaining. The insults are mostly from famous people and often are directed at other famous people. We particularly enjoyed the chapters about actors and politicians. I suppose the book's weakness is that one needs a broad background to fully enjoy it. There were a few insults that didn't mean much to us because we'd never heard of the target.
I am also linking to some other books that we've read "together."
Current tally: 8 books finished, 7 books acquired