"The Odyssey" and "The Iliad" by Homer. Somewhere between third and fifth grade, I found translations of both books on a shelf in a back room. I've loved Mythology and everything connected to the Trojan War ever since.
Other than an attempt to forge my parent's signatures on a report card in first grade, my first stabs at creative writing occurred in ninth grade re "current events." Our history teacher expected us to bring news clips from home and read them aloud...or copy the text by hand. I invented mine in study hall the period before our class. My classmates, who knew my secret, snickered and laughed over my breathless news items, i.e., "Flash! Man grows eleventh finger from left eyeball!"