According to my extensive research (five minutes browsing the web) the illustrious but often overlooked bookend was first used about 2500 years ago. Mostly made of wood or brass, they have stood the test of time.
These brave helpers of the literate have done their jobs without fail. Holding the knowledge of galaxies and unknown aliens. Never embarrassed over tawdry company or sweaty loin-clothed natives. Nor flinching from cuddly bears and twirling ballerinas.
So please take the time to thank your bookends today. They do you a honorable service that is not only over looked but very under appreciated.