One idea could be exploring the sorting hat's origin more in - depth. Maybe it was created by a powerful wizard long ago with a specific purpose, like maintaining the balance between the houses. Another could be a story where the sorting hat has a malfunction and starts sorting students into completely wrong houses, creating chaos at Hogwarts.
Well, a great plot could be that the Sorting Hat gains the ability to communicate with students in their dreams before they arrive at Hogwarts. It could tell them secrets about the houses and what it really means to be sorted into each one. This could lead to some students arriving at Hogwarts with a completely different view of the sorting process and causing chaos as they try to change the system. Also, there could be a plot where the Sorting Hat gets stolen and the students have to find it and in the process, they learn more about its history and power.
One idea could be that the Sorting Hat has a vision about Hermione's future during her sorting. It could foresee her becoming a great leader in the wizarding world and gives her some special advice. Another could be that the Sorting Hat gets magically malfunctioned and tries to sort Hermione into different houses throughout her first year, causing all kinds of chaos and self - discovery for her.
Perhaps the girl has a special connection with the Sorting Hat. It could be that the Hat reveals a hidden prophecy about her when it is placed on her head. This prophecy then sets her on a path to save Hogwarts from a new and unknown threat. She might have to team up with students from all the houses to fulfill the prophecy, and in the process, learn about the true meaning of unity among the houses.
In some 'Harry Potter alternate sorting ceremony fanfiction', there could be ideas like the Sorting Hat considering different qualities. For example, it might focus more on a student's creativity rather than just the traditional Gryffindor courage, Ravenclaw wisdom, Hufflepuff loyalty, and Slytherin ambition. Maybe a character who is very artistic gets sorted into a new, made - up house based on that creativity.
There could be other original characters in the fanfic as well. Maybe there's a mysterious teacher who has a deep understanding of the Sorting Hat's magic. This teacher could help the girl unlock the secrets of the Sorting Hat and her own potential. And then there could be a rival student, perhaps from a different house, who challenges the girl at every step. Their interactions could drive the story forward and add conflict and drama to the plot.
Well, the main plot could be about Harry being a different kind of hero in Slytherin. Maybe he uses his unique skills and the knowledge from being the Boy Who Lived (WBWL) to change the perception of Slytherin in the wizarding world. He could be on a conquest to make Slytherin a more inclusive and positive house, defying the traditional dark and cunning stereotypes associated with it.
One idea could be Harry Potter arriving in Skyrim and using his magic to combat the dragons. Maybe he teams up with the local mages and they learn from each other's magical techniques.
One idea could be exploring what would happen if a new, mysterious student joined Hogwarts during the Triwizard Tournament. This student could have a hidden agenda related to the Dark Arts and start influencing the events of the tournament in unexpected ways.
One interesting plot idea could be Harry's return to Hogwarts as a teacher. He could pass on his unique experiences and knowledge to the new generation of students.
One idea could be a dragon that forms a bond with Harry and helps him in his battles against Voldemort. Maybe the dragon has some special powers that are crucial for Harry to win.