I just discovered that the same question has been asked and answered on the game page, but it doesn't work for me. Perhaps a bug? Here's a partial transcript in the street outside the graveyard:
> i You're carrying a magnet, a walking stick, a raincoat, a hat, some sunglasses (worn), a note and a knife. > get key The iron key is out of reach. > get key with stick You very nearly can get the key, but not quite... > get key with magnet You very nearly can get the key, but not quite... > get key with magnet and stick You can't use multiple objects with that verb.That's not including the dozens and dozens of other things I tried.