A plot could involve a group of Hogwarts students accidentally ending up at Ilvermorny and having to adapt to the new school's rules and culture while also trying to find their way back home. It would be a story of discovery and friendship as they interact with the Ilvermorny students.
Another plot could involve the Marauders getting involved in a mystery that is plaguing Hogwarts in the present day. They use their old - school pranking skills and knowledge of the castle's secrets to solve it. They might have to team up with some of the current Gryffindor students who remind them of themselves when they were young.
One idea could be a story where a Hogwarts student transfers to Ilvermorny and has to adapt to the new magical environment, different spells, and make new friends. They could also compare and contrast the two schools' teaching methods.
One idea could be Riley and her friends from Girl Meets World somehow end up at Hogwarts through a magical portal. They could be sorted into different houses and have to navigate the challenges of Hogwarts life while also bringing their own unique personalities from Girl Meets World. For example, Riley's positive attitude might clash with some of the more traditional Hogwarts ways at first.
One idea could be a story where a Hogwarts student transfers to Ilvermorny and has to adjust to the new magical environment, different classes and make new friends. They could also discover unique magical creatures native to America.
They could start by being curious about each other's magical abilities. For example, a Hogwarts student might be amazed by the way Ilvermorny students use wandless magic more often. This initial curiosity can lead to friendly exchanges and discussions about magic.
Perhaps in the fanfiction, Hogwarts decides to send a group of students to study the Muggle world up close with the Dursleys as their hosts. But what if the Dursleys are secretly working for a dark wizard who wants to use this opportunity to infiltrate Hogwarts? That would be a huge plot twist.
One idea could be Naruto being a transfer student to Hogwarts. He might use his ninja skills in the wizarding world, like using his speed to be great at Quidditch. Another could be that Naruto discovers he has magical powers in addition to his chakra, and he has to learn to balance both. And perhaps he makes friends with Harry Potter and they teach each other their unique skills.
One idea could be Draco being sorted into a different house by mistake. Maybe the Sorting Hat has a moment of confusion and puts him in Hufflepuff. This would lead to him having to adjust to the very different values and atmosphere of that house, and it could be a journey of self - discovery as he realizes there's more to life at Hogwarts than just the Slytherin way.
An OC could be a Muggle - born with a very special family heirloom that turns out to have magical properties once they arrive at Hogwarts. This heirloom could be the key to solving an ancient mystery within the castle walls, like a hidden chamber or a long - forgotten spell.
Well, perhaps in the fanfiction, Hermione transfers to Hogwarts because her family has to move for some Muggle - related reason. Once at Hogwarts, she could find that the Hogwarts library has some books that were banned at her old school. This could lead her on a quest to study those books and uncover secrets that not only help her in her studies but also in solving a mystery that has been plaguing Hogwarts for years.