Tonight, I carried an armful of clothes into the laundry to put in the clothes hamper. I didn't bother turning on the lights because 1) my arms were full and 2) the hamper is always in the same spot.
So I dumped my armload of clothes and immediately remembered that last night I'd moved the hamper because of Stray Cat and soon realized that I had just deposited my clothes in a recently used litter box.