A super-short bedtime story
"Welcome, mysterious guest, to the Witch's little shop. What would you like to trade? You're a regular, so you know the price: one story, and it has to be interesting."
The owner of the cramped little house sat by the door, smiling warmly at every guest.
Perhaps many years from now, the stories recorded by the witch will be enough to fill a library.
Theme: A witch never breaks a promise