Today I'm going to talk about the Wishing Well. It's a trope that everyone knows, but you rarely see IMHO. I'd like to use it one day.
As you well know, to get a wishing well to work, you have to drop something of value into it. Usually a coin or bean or personal item. Then you make a wish, which comes true in a few days or so.
What would really interest me, is if the well required something more valuable than it gave back. Thus, there'd be diminishing returns and a real sacrifice. I wonder what sorts of stories could come of that? Maybe someday, I'll get to find out :)