How to Find Lost Objects. This will be useful. I borrowed the Snook’s Swiss Army knife when we went to Prisoner of Azkaban so I could cut apart my little knitter business cards. That night he asked for it back. I told him I’d given it back. He didn’t have it. I swore I didn’t have it. We argued back and forth for ten minutes, with him imploring me to check my bag and me insisting that I didn’t have it. Finally, to prove him wrong I dumped out my bag. There it was. Oops.