M.T. Black
Hero
A scene I really like in Harry Potter is where the goblins have trained the white dragon to be afraid of the strange rattle. When they want to pass safely by, they take the device and rattle it, and the dragon cowers. This is the sort of thing that would make a good dungeon puzzle, IMO.
What other ways are there of overcoming a monster that don't involve direct combat?
What other ways are there of overcoming a monster that don't involve direct combat?