Just something that popped into my head today. Use it in your next hex crawl and see if the PCs (or more correctly, the players) pick up what you’re putting down.
Hex XXXX: A shallow grave lies in an overgrown thicket that stands here alongside the river. Excavating the grave reveals the rotted, mostly skeletal corpse of a halfling. His tattered clothing identifies him as being a River Halfling in life. A careful examination of the corpse discovers he was strangled to death.