One idea could be Hermione using her magic skills secretly in the Muggle school to help out her friends, like magically fixing a broken project right before it's due. Another could be her facing challenges in understanding Muggle school subjects as they are so different from what she's used to in the wizarding world. For example, she might struggle with Muggle history because it doesn't include the magical events she knows.
Perhaps she could start a secret club in the Muggle school for students who are interested in the supernatural. In the fanfiction, she could use her knowledge of magic to create 'spooky' but harmless effects during club meetings, like making objects float slightly. This would draw in curious students and also give her a chance to share some of her wizarding world knowledge in a veiled way.
A cool plot could be that a wizard decides to study at a Muggle school to understand Muggle culture better. He might struggle with basic Muggle things like using a calculator or writing with a pen instead of a quill. Meanwhile, he could use his magic in very subtle ways to help his Muggle classmates, like making a wilted plant in the classroom come back to life. This would create a lot of humorous and heartwarming situations as he tries to fit in.
Well, one interesting plot twist could be that Hermione discovers she has a hidden connection to the Muggle Princess world that changes her perspective on magic. Maybe she finds out that her family has a long - lost heritage in the Muggle Princess realm and this knowledge makes her question her place in the wizarding world.
One plot idea could be that Draco Malfoy accidentally stumbles into the Muggle world and meets a Muggle who is a huge fan of the wizarding world through books. The Muggle helps Draco see the beauty in the Muggle way of life, and Draco in turn shows the Muggle some magic in a very secretive way. They form an unlikely friendship that challenges Draco's pure - blood beliefs.
A different plot could be a time - travel story. A Muggle from the future somehow travels back to the Harry Potter era and meets Draco. Their interaction could be really interesting as the Muggle has knowledge of future events and Draco is intrigued by this strange person from another time. Their relationship could develop as they try to figure out how to send the Muggle back to their own time.
One idea could be a Muggle-born wizard who tries to hide their magical abilities in Muggle society while also secretly helping other wizards in need. For example, they could use magic subtly to fix things around their Muggle neighborhood, like making a broken streetlight work again without anyone suspecting it was magic.
One idea could be that Hermione invites her Muggle friends to a magical place for the reunion. They could be amazed by the wonders of the wizarding world, like seeing Hogwarts for the first time. Hermione would have to explain all the magical things around them, and there could be some funny misunderstandings as her Muggle friends try to adjust to this new and strange environment.
One idea could be James struggling to understand the wizarding world his child is part of. For example, he might be baffled by the concept of magic wands and how they work. Another plot could be him trying to protect his child from the darker elements of the wizarding world without having any magic himself. He could rely on his Muggle skills like his knowledge of technology or self - defense techniques.
Perhaps the Muggle Prime Minister is accidentally affected by a spell that makes him see magical creatures everywhere. He then has to deal with the chaos while also trying to keep it a secret from the public. He might start to question his own sanity until a wizard comes to his aid.
Well, perhaps Hermione would meet her old Muggle school friends and be a bit of an enigma to them. They might notice how much she's changed but not be able to put their finger on it. She could have some interesting conversations about her new life at Hogwarts and her adventures, while still keeping the magical world a bit of a secret. There could also be some comical moments when she tries to fit back into the Muggle world and forgets some of the Muggle ways she used to know.
A plot could revolve around Hermione's friends' reactions. For instance, Harry and Ron might be shocked at first but then become super protective. It could also show how Hermione's pregnancy affects her studies or her work in the wizarding world, perhaps she has to take a break from her research and how she copes with that.