My mother-in-law found this rock
on this beach
and I immediately saw a bookend. And I carried it up many, many steps to the car along with a very, very sandy/wet/tired toddler.
And brought it home and sprayed it with some shiny finish and put some little cork sticky things on the bottom so it would stand up straight and now I have exactly the bookend I imagined.
Thus concludes this episode of "Decorating/Crafting with Natural Souvenirs."