I know this is a little strange to ask on a forum but... I don't know where else to ask! My boyfriend is a physicist and I want to get him some fun book relating to it for his birthday, but most of the books I found looked like they were poor quality ("New York Times bestsellers" written by non-physicists, or really vague and sensationalistic books about time travel). I want something that is higher-quality, and it can be at an advanced level. Can you think of any bizarre, lighthearted or off-topic books that are still true physics books, books that you would approve of or enjoy? Thanks!!!