A theme like 'The Marauders' time at Hogwarts can also be really interesting. Fans can write about James Potter, Sirius Black, Remus Lupin, and Peter Pettigrew's days as students, their pranks, and how they formed their friendship, which is related to the main story but offers a different perspective.
Another great theme is creating new adventures for the characters in different magical locations. Maybe the trio - Harry, Ron, and Hermione - go on an adventure in a far - off magical land that J.K. Rowling hasn't written about yet. This allows fans to expand on the sense of exploration in the series.
One appropriate theme could be the further adventures of the characters after the main series ends. For example, exploring how Harry, Ron, and Hermione continue to fight dark magic in the wizarding world. Another could be the backstories of minor characters, like Neville's family history or Luna's early life at Hogwarts.
One popular theme is exploring the backstories of minor characters. For example, delving into the life of Neville Longbottom before he came to Hogwarts. Another is imagining different magical creatures and how they interact with the wizarding world. Also, stories about the Marauders (James, Sirius, Remus, and Peter) during their school days are quite popular.
Hermione's role in the fight against the Dark Arts is a great fanfic theme. It could detail how she used her intelligence and magical skills to develop new spells or counter - curses against the Death Eaters. Also, her efforts in promoting the rights of house - elves could be a central theme. A fanfic could tell the story of how she furthered her cause and made a real difference in the wizarding world regarding the treatment of house - elves.
One popular theme is their adventures after the main series ends. For instance, they might go on a quest to discover more about the origins of magic. Another theme is their friendship during their Hogwarts years, like the time they spent in the library together. Also, some fanfics focus on how they support each other during difficult times, such as when Harry is facing Voldemort and Hermione is always there to give him advice and assistance.
Well, there are themes like the development of new spells. The characters could be in a spell - creating club where they try to come up with innovative magic. Friendship is also a huge theme that can be explored more deeply. For example, how the friendship between different houses evolved over time. Also, exploring the different types of magic in different cultures within the wizarding world, like the magic practiced in other countries that we don't hear much about in the original books.
A theme centered around the development of friendships among different houses in Hogwarts is also very suitable. Such as a story where students from Gryffindor, Hufflepuff, Ravenclaw, and Slytherin come together to solve a mystery that affects the whole school. This can show the unity and diversity within the Hogwarts community, which is an important aspect of the 'Harry Potter' world.
One appropriate theme could be exploring the further adventures of the characters after the main story ends. For example, how Harry, Ron, and Hermione continue to fight dark magic in new forms that emerge in the wizarding world.
There are alternate universe fanfics that are appropriate. For instance, what if the sorting hat had different criteria for sorting students? Or what if there was a world where magic was used for different purposes than in the original series. These types of fanfics allow for creativity while still staying within the boundaries of the overall positive and family - friendly nature of the Harry Potter universe.
One positive theme could be exploring the further adventures of the characters after the events of the books. For example, how Harry, Hermione, and Ron continue to fight against the remaining dark forces in the wizarding world. Another theme could be the development of friendships between different houses at Hogwarts, like a Slytherin and a Gryffindor becoming friends and working together.
One appropriate theme is exploring the friendships further. For example, fanfiction about Harry, Ron, and Hermione's adventures outside of the main events in the books. It could be them traveling during the summer holidays and having different magical experiences.