When writing, you can find interesting things to add to stories just by taking a walk instead of driving. Then on your way back, if you walk a different route, you can find even more intriguing things.
My son Scott and I came across this giant rock ball on BYU (Brigham Young University) campus. It originally came from Costa Rica, but yours could come from anywhere you want it to. Think of all the things you can do in your story with a giant rock!
(For one thing, it provides a convenient arm rest for an author.)
What would you do with a giant rock in your story?