David Macaulay books worth mention
Motel of the Mysteries by David Macaulay tells the tale of an archeologic exploration 4022 of a motel buried since 1985. The cause of the burial? An accidental lowering of the bulk mail postage rate caused postal spam to swell. (The book was published in 1979 and does not use the phrase "postal spam".)
Baaa is probably the favorite book of his among my kids. It tells a very literally sheeple story of a post-humanity world.
Final thought: has liked all of the Macaulay books he's looked at