Have you ever taken someone else's keys by mistake? Once when I was at the tanning salon, I laid my keys down to sign in and picked up mine and someone else's w/out realizing it. I tanned and when I came out of the room, the gal behind the desk asked me "Mary, did you by any chance pick up another set of keys?" I said "No, I don't think so but let me check". I felt like an idiot. The young man whom the keys belonged to was her boyfriend and he practically cried; he was so relieved. He said "It's a new car and I don't have a spare. I thought I'd need to call the dealer and have another key made". I felt bad for him, apologized profusely and he had been sweet enough to wait for me to tan and get dressed and fix my make-up, etc. before asking me about his keys. If the situation was reversed, I probably would've been pounding on doors. LOL So maybe the keys hooked onto one of the leashes and wound up on top of the fridge as you said. Anyhow, glad you found them.