In some fanfictions, there might be a plot where a student gets trapped under the Whomping Willow during a full moon and has to be rescued by a werewolf, creating a complex and dangerous situation that tests the relationships between different characters in the wizarding world. The Whomping Willow could also be a central part of a mystery, for example, it might be the key to unlocking a secret about Hogwarts' founding or a long - lost treasure. Characters would then have to figure out how to interact with the dangerous tree without getting seriously injured to solve the mystery.
Another plotline could be about a group of students trying to tame the Whomping Willow. They might be researching old spells or trying to communicate with the tree's spirit (if it has one). This could lead to a series of adventures as they learn more about the tree's nature and the secrets it guards, while also facing the challenges of keeping their experiments a secret from the Hogwarts faculty.
Another aspect could be the relationship between the Whomping Willow and the characters we know. For instance, perhaps Fred and George Weasley once tried to prank the tree and had a hilarious yet dangerous encounter. Or Hermione might study the tree in her quest for knowledge, trying to find out more about its magical properties and how it fits into the overall ecosystem of Hogwarts.
One common theme is danger. The Whomping Willow is a dangerous entity in the Harry Potter world, so many fanfictions play on that. Writers might create scenarios where characters are in peril because of the tree's violent movements.
One interesting story could be where Hermione discovers a hidden passage near the Whomping Willow. She uses her intelligence to figure out how to get past the tree's violent branches without getting hurt. Maybe she uses a spell she's been researching in secret.
Harry Potter himself is often a main character. Fanfiction might explore his experiences with the Whomping Willow in more depth, like a time when he discovers a new way to avoid getting hit by its branches while on a secret mission.
In some fanfictions, the Whomping Willow might be a sentient being that has a special connection with Sirius Black. Maybe it was enchanted by a powerful wizard long ago, and only Sirius, with his unique magical aura, can communicate with it. This could lead to a plot where Sirius enlists the help of the Whomping Willow to defeat a common enemy, like a group of dark wizards who are after Hogwarts.
In this fanfiction, perhaps Harry is trying to tame the Whomping Willow. He might be on a mission to protect his friends from the dangerous tree and in the process, forms an unexpected bond with it. He could be using his skills and courage to face the challenges the tree presents.
Hermione would probably be there. She might be worried about Harry and trying to stop him from getting too close to the Whomping Willow at first, but then gets involved in the adventure too.
One idea could be the Whomping Willow as a guardian of a hidden Hogwarts garden. In this fan fiction, the tree only allows those with pure hearts to pass through its branches to reach the beautiful and enchanted garden filled with rare magical plants. It could be a story of discovery for young students.
Another plot could be that there's a magical accident that transports Harry to Willow's world. There, he has to adapt to the different style of magic and the presence of demons. Willow takes him under her wing and together they work on a way to get Harry back to his world. In the process, they learn from each other's magical techniques and form a strong friendship that transcends their different universes.
Well, some might involve magical creatures with furry characteristics in new adventures at Hogwarts. For example, a werewolf character could have a unique story arc that intersects with the main Harry Potter plot. Maybe they are trying to find a cure or dealing with the prejudice within the wizarding world in a different way than what's in the original books.