A wealthy family left me a note saying they had hidden 15 coins around their mansion to test my cleaning skills. I found every coin, stacked them neatly on the kitchen table, and left my invoice underneath with a note: “All 15 found\!” I also discovered the husband’s expensive watch behind the headboard, safely placed it in a drawer, and left a note explaining where I found it. Embarrassed by their test, the wife asked me to clean every two weeks—and I agreed, doubling my rate.