One possible plot could be that the OC is a new student at Hogwarts. He might be initially shy but quickly notices Hermione's intelligence. They could be paired together for a project in Potions class. As they work together, they start to bond over their shared love for knowledge and magic. The OC could introduce Hermione to some unique magical concepts from his own family's heritage, and their relationship could slowly develop from friendship into a romantic one as they face challenges together, like dealing with a difficult spell or a mean-spirited bully in the school.
The plot could be that the OC is a wizard who has been living in the Muggle world for a long time. He comes to Hogwarts later than the others. Hermione, being curious about his experiences, starts to talk to him. They find that they both have a passion for protecting the rights of magical creatures. They work together to improve the conditions of the magical creatures at Hogwarts. As they do this, they discover more about each other's personalities. The OC is charmed by Hermione's determination and Hermione is attracted to the OC's kind heart. Their relationship blossoms as they continue to fight for what they believe in.
Well, the plot might involve the OC being a transfer student from a different magical school. Hermione is immediately intrigued by his different approach to magic. They meet in the library, both reaching for the same rare book. This encounter starts their interaction. As time goes on, the OC joins Hermione and her friends on an adventure outside of Hogwarts, perhaps to solve a mystery related to an ancient magical artifact. During this adventure, they rely on each other's strengths. Hermione's vast knowledge and the OC's unique skills help them survive. This shared experience deepens their connection, and they realize their feelings for each other.
One possible fanfiction could be about Hermione discovering Snape's hidden past and his true motives. She might initially be skeptical but as she delves deeper, she realizes that Snape was more complex than she thought. For example, she could find out about his love for her mother's friend Lily and how that influenced his actions throughout the series.
A plot could be that Susan Bones discovers a hidden prophecy related to Hermione and Harry. This prophecy might foretell of a great power they could unlock together. So, the three of them embark on a journey to understand and fulfill this prophecy. Along the way, they face many obstacles like dark wizards who want to stop them and ancient magical guardians who test their worthiness.
Well, perhaps in this fanfic, the wizarding world has to face a nuclear threat from the Muggle world. Wizards might use their magic to try and stop the missiles. For example, they could create a huge magical shield around major wizarding cities like Hogwarts. The characters from 'Harry Potter' would be in a race against time, with Harry, Hermione and Ron using their knowledge and skills to find a way to disable the nuclear weapons before they cause destruction. It could also explore how the wizarding society views the Muggle's most powerful weapon and how they interact with the Muggle governments during this crisis.
The plot could revolve around Bellatrix's memories in Azkaban. Since she was there for a long time, she might have had some extremely vivid and disturbing memories. A fanfiction could explore these memories and how they influenced her actions after she escaped. For example, she might have seen the faces of those she killed in her dreams while in Azkaban, and this could have made her more vengeful.
Well, perhaps in the fanfiction, Harry Potter himself has to attend a parenting class. He could be learning how to guide the next generation of young wizards at Hogwarts. Maybe he's sharing his own experiences of growing up without proper parental guidance for most of his life, and using that to figure out how to be a better mentor or father - figure to the students.
The plot could be that Voldemort has cursed Harry's glasses to be blindfolded as a way to weaken him. Harry then has to find a way to break the curse. He goes on a journey through the Forbidden Forest, relying on his friends' guidance and his own inner strength. Along the way, he meets magical creatures that offer him clues on how to reverse the curse.
One possible plot could be that Hermione is researching the properties of lemon - based magical substances for a school project. She discovers that when combined with a special bath ritual, it can enhance a wizard or witch's memory. So, she tries it out herself in the girls' bathroom at Hogwarts. But things go a bit awry when the lemon - bath magic starts to affect not just her memory but also her ability to control her magic for a short while. This could lead to some comical and also dangerous situations as she tries to fix it.
Perhaps in the fanfiction, the owl was a magical anomaly. It was attracted to Lily Potter's pure heart. The owl had the power to transform into a human - like form briefly. Lily discovered this and they formed a pact. The owl - human would protect Harry when she couldn't. So when Voldemort came, the owl - human fought valiantly, but was overpowered. However, it left a magical imprint on Harry that would later help him in his battles.
One great fanfiction could be where Harry, Hermione, and Ginny go on a secret mission together. Maybe they discover a hidden chamber in Hogwarts that was unknown even to Dumbledore. They have to use their combined skills - Harry's courage and Quidditch skills, Hermione's vast knowledge, and Ginny's powerful magic - to solve the mystery within the chamber.
One idea could be a story where Hermione and Draco are paired up for a special project at Hogwarts. They start off hating each other as usual, but as they work together, they begin to understand each other better. Harry could be suspicious at first, but then realizes that their newfound friendship could be beneficial for the wizarding world. For example, Draco might share some Slytherin secrets that help in a battle against the dark forces.