Another plot could be centered around rivalry. The twin might be jealous of Hermione's popularity at Hogwarts. So, they start competing in various aspects, such as in Quidditch (even if Hermione isn't really into it, the twin could be). This rivalry could cause some tension between them, but eventually, they would realize that they are stronger together and reconcile.
One interesting plotline could be the twins getting involved in a time - traveling adventure within the wizarding world. They might use their signature prank - skills to outwit dark wizards in different eras.
One possible plotline could be Hermione getting involved in the Cullen family's vampire world and using her magic to help them in some way. Maybe she discovers a new spell that can protect them from their enemies.
One interesting plotline could be Hermione and the Malfoys having to work together on a secret magical project. Maybe it's something that could change the wizarding world, and they have to put aside their differences.
One possible plotline could be Hermione trying to find a way to break the curse on her own. She might use her vast knowledge of magic from the library. Another could be her friends, like Harry and Ron, going on a dangerous quest to find the antidote for the curse. And perhaps there's a plotline where the curse has some unforeseen side effects that change her relationships with other characters.
Perhaps a plotline where Hermione has to solve a mystery that the Marauders were involved in. The Marauders might have left behind some clues that only Hermione, with her sharp intellect and research skills, can decipher. This could bring her closer to understanding their true nature and the secrets of their time at Hogwarts.
A common plotline is an alternate universe where Snape is not as bitter and Hermione befriends him more easily. They could be involved in a battle against a new dark force, and their combined intelligence and magic powers are crucial for victory. Also, there could be a plot where Hermione accidentally enters Snape's mind through some experimental magic and discovers his deepest secrets, which then changes their relationship.
In some fanfictions, Hermione might get involved in a Weasley family drama. For example, helping resolve a conflict between two Weasley siblings. This could involve her using her intelligence and problem - solving skills to bring the family back together. Also, there could be a plot where Hermione starts a magical project with the Weasleys, like creating a new spell or potion, which could lead to all sorts of unexpected events and discoveries.
One interesting plotline could be Hermione's journey of self - discovery within the pack. Maybe she discovers new magical abilities or a deeper understanding of her own strength as she interacts with the pack members.
One interesting plotline could be Hermione's struggle to hide her maledictus condition from her friends at Hogwarts. She might constantly worry about turning into the beast associated with the curse and how it could endanger those around her.
Some fanfictions explore a different relationship dynamic between them. Maybe Harry has a problem that only Hermione can understand and help him with, and this brings them closer in a way that's different from their normal friendship. It could be something related to his connection with Voldemort or his family history.