I lost the envelope containing my new bank card, which I was sure I had propped up on my desk. Searched everywhere, crawled underneath, emptied my small study, nowhere. Looked everywhere I could think of, including the bins. Sitting at my desk later and decided I would have to cancel the card and wait for a new one, nudged the desk, heard a slight sound, and underneath was the envelope with card. Think it must have been trapped at the back of the desk against the wall, but I did look previously.
[I do admit to making a plea to Saint Jude, patron of lost things, I think, and sent a heartfelt prayer of thanks immediately upon discovery.]