One interesting Charon fanfiction could be about his backstory. Maybe it delves into how he came to be the ferryman of the dead in the wizarding world. It could explore his relationship with other magical beings in the underworld.
There might be a fanfiction where Hestia has a special magical ability that was never revealed in the books. For example, she could have the power to communicate with magical creatures in a unique way and uses this ability to gather intelligence for the Order of the Phoenix. It could also focus on her backstory, like where she came from and how she got involved with the wizarding world.
There could be a fanfiction where Harry Potter, as a powerful wizard, unknowingly has vassals among the students at Hogwarts. These vassals might be those who look up to him and are willing to follow his lead. They could assist him in his adventures, like when he's facing the new threats that emerge after the fall of Voldemort. This could add a new layer of complexity to the relationships within the school.
A possible fanfiction could be that Dumbledore owns a magical artifact shop in Diagon Alley. The items in the shop have their own histories and powers. Harry and his friends might visit the shop and discover something that is crucial for their fight against Voldemort, like a weapon or a protective charm.
A lot of fanfictions that are angry could be centered around Snape. There are fans who are either very angry at Snape for his actions towards Harry and his friends, or angry on his behalf because they feel he was misjudged. So, you might find angry fanfictions that either demonize him further or try to redeem him more forcefully than in the original story, showing the author's strong emotions regarding this character.
There's also 'The Polyamorous Adventure in the Wizarding World'. This fanfiction takes a unique approach. It not only focuses on the relationships but also on how the polyamorous relationships impact the overall magic and the fight against dark forces. It has an interesting plot that keeps you hooked from start to finish.
One interesting Harry Potter 1945 fanfiction could be about the early days of Hogwarts and how the magical world was different back then. Maybe it focuses on the founding of certain magical traditions that we see in the main series but are not fully explored. For example, it could detail how the houses were originally established and what the selection criteria were like in 1945.
One interesting fanfiction could be about Albus Potter's adventures at Hogwarts that mirror his father Harry's, but with his own unique twists. For example, he might face a new dark wizard threat that is related to the past but in a different way. Another could be a story where Albus discovers a long - lost spell that Harry never knew about and uses it to save the wizarding world. There are also fanfictions that focus on the relationship between Albus and his family, like how he copes with the pressure of being Harry Potter's son.
In some fanfictions, Smart Potter is not just book - smart but also socially smart. He uses his intelligence to understand the political undercurrents in the wizarding world. He might form alliances with different houses and magical creatures to bring about a more inclusive and harmonious wizarding society, all while still being a student at Hogwarts and dealing with his regular classes.
One interesting fanfiction could be 'Ginny's Hidden Adventures'. In this, Ginny might go on a secret quest while Harry is away on Auror business. It could show her as a strong and independent witch, using her skills to solve mysteries in the wizarding world.
One interesting 'Harry Potter Lord Potter' fanfiction could be the ones where Harry discovers his true heritage as 'Lord Potter' much earlier and starts to reshape the wizarding world's politics. It often involves him being more assertive and using his family's ancient powers and influence.