It could be really interesting. Maybe Harry Potter uses his magic to help Moana on her journey. For example, he could use a spell to calm the rough seas she sometimes faces. Or Hermione could use her vast knowledge to figure out some of the mysteries in Moana's world that even she doesn't understand yet.
A crossover fanfiction might involve the characters swapping their environments. So, Moana could find herself at Hogwarts, learning about magic and trying to fit in with the wizards and witches. Meanwhile, Harry Potter could be in Moana's island, learning about their way of life and using his magic to protect the island from any new threats that his magic is better equipped to handle than the islanders' traditional methods.
One possible plot could be that Moana's island is threatened by dark magic from the Harry Potter universe. Harry, Hermione, and Ron could be transported to Moana's world while on a mission to stop the spread of this dark magic. They would team up with Moana to use her knowledge of the ocean and the island's magic, along with their own wizarding skills, to fight off the dark forces. Maybe they'd have to face off against a wizard who has enchanted some of the sea monsters in Moana's world.
In a Harry Potter - Moana crossover fanfiction, the magical creatures in the Harry Potter world could interact with the spirits in Moana's world. For instance, a Hippogriff could fly over Moana's island and be seen as a strange new creature. Or the Maui's fishhook could have some sort of magical connection with a powerful wand in the Harry Potter universe. The characters' personalities would also make for great combinations. Hermione's intelligence and Moana's determination could lead them to solve some big mystery together that involves both their worlds.
Harry and Moana would likely become fast friends. Harry would be intrigued by Moana's courage and determination, while Moana would be fascinated by Harry's magic. They would share their stories and learn from each other.
Moana would be very curious about the wizards' magic. She'd probably ask Harry a lot of questions like how his wand works. Harry, on the other hand, would be amazed by Moana's connection to the ocean. He might be a bit envious of her natural ability to navigate the seas. Hermione would be eager to learn about Moana's island's history and magic, and she'd probably take notes. Ron would be more interested in the food in Moana's world.
Moana would likely be curious about the magic in Harry Potter's world. She might ask Harry to show her some spells, like the levitation charm. Harry, on the other hand, would be impressed by Moana's courage and her ability to sail across the ocean. He could learn from her about determination. Hermione might study the culture of Moana's island, and Moana could learn about Hermione's love for books and knowledge.
One idea could be a Moana crossover with Frozen. Moana could end up in Arendelle due to a magical storm. She teams up with Elsa and Anna to stop an approaching iceberg that is threatening both her island and Arendelle. Moana's skills in sailing and her connection with the ocean could be combined with Elsa's ice powers to find a solution.
One common theme is the clash and fusion of different cultures. The Polynesian culture of Moana and the wizarding culture of Harry Potter often collide in these fanfictions. For instance, the different kinds of magic, like Moana's connection to nature and the more spell - based magic in Harry Potter.
It could be really interesting. Imagine Moana in the wizarding world. She might be a powerful witch with her own unique magic related to the ocean. For example, she could use her connection to the sea to create powerful water - based spells. Maybe she'd attend Hogwarts and be sorted into Gryffindor for her bravery in facing the unknown on her ocean voyages in her own story.
A fanfiction titled 'Moana's Adventure at Hogwarts' is quite good too. Moana arrives at Hogwarts during a time of trouble. She uses her courage and the power of the ocean (in a new, magical way in the wizarding world) to help Harry and his friends. It shows how her different upbringing and abilities can be useful in the Hogwarts environment.
Imagine a fanfiction where Moana and the Little Mermaid embark on an adventure to a mysterious island in the middle of the ocean. This island is said to hold the key to a powerful magic that can heal any damage to the ocean. Moana would be excited to explore the island, while Ariel would be a bit more hesitant as she is used to the underwater world. But once they land, they discover that the island is full of strange and wonderful things. They meet creatures that are part - plant, part - animal, and they have to solve puzzles to get closer to the magic. Their different perspectives and skills would make this a thrilling and unique adventure.