Wishing Fairy

The Wishing Fairy is a mythical fairy that supposedly lives within a wishing well that grants the wish of whoever throws a penny into the well and recites the magic words.

Mainstream Smurfs Media
In the episode "The Secret Of The Village Well", Clumsy believes that there is such a fairy that lives in the well of the Smurf Village and has been seen talking to it about a secret wish that he doesn't want to share with anybody for fear that it wouldn't be granted. However, upon hearing that he would need a penny in order for such a fairy to grant his wish, Clumsy was put off from continuing until his fellow Smurfs showed up with an old penny that Gargamel had dropped which they ended up taking while he was chasing them in the forest. However, the penny did not do Clumsy any good as he dropped it into the village well, even after Hefty went inside the well to retrieve the penny only to find that the village well isn't a wishing well.

However, out in the forest, Gargamel had posed as the Wishing Fairy inside a well that he had dug in order to capture some Smurfs. When the Smurfs stopped by that well for Clumsy to drop the penny into it after they saw that it was advertised as a wishing well, Clumsy spoke his wish into that well only to be captured by Gargamel.