The moment you grab your bag and head for the door, your keys decide it's the perfect time to become invisible. Not misplaced. Not forgotten. Invisible. Like they attended some kind of advanced disappearing school and graduated with honors.
Keys don't go missing randomly. They go missing with intention. They wait for the exact moment your heart rate is already climbing, your coat is already on, and you're already three minutes behind schedule. That's when they make their move.