Well, I've heard of 'Harry's Seizure Journeys'. It's a more character - driven fanfiction. It shows how Harry's seizures affect his relationships with different characters like Hermione and Ron. It also explores how the wizarding community views such a condition, as it's not something that is very common in their world.
One common theme is the struggle for acceptance. Harry often has to deal with others not understanding his seizures. For example, some characters in the fanfiction might initially be afraid or confused. Another theme is the search for a cure. Since it's the wizarding world, there are often attempts to use magic to heal Harry. And of course, the theme of friendship. His friends like Ron and Hermione are usually by his side, helping him through the difficult times.
I've read 'Harry's Arm Cuff Adventure'. In this fanfic, the arm cuffs are a gift from an ancient wizard. They give Harry unique powers, like the ability to control certain elements. It's a really engaging read as it shows how Harry struggles to master these new powers while dealing with the challenges at Hogwarts.
One great 'Harry has red hair' fanfiction is 'The Red - Haired Harry Adventure'. It's a really fun read where Harry's red hair leads to some interesting magical encounters. For example, in one scene, his red hair somehow interacts with a magical creature in a way that no one expected.
One interesting 'Harry Potter has cancer' fanfiction might be 'The Battle Beyond the Illness'. In it, Harry discovers he has cancer but still tries to fight Voldemort's forces. His friends, like Hermione and Ron, rally around him, using magic in creative ways to both combat the Dark Arts and try to find a magical cure for his disease.
One great fanfiction could be 'Harry Potter: The Magneto Legacy'. In this, Harry discovers his newfound Magneto - like powers and has to navigate the wizarding world while hiding this strange new ability. It has an interesting plot where he uses his powers to protect Hogwarts from a new dark threat in a unique way.
There's a fanfic where Harry's super strength is a result of an ancient spell gone wrong. It's really interesting as it shows how Harry has to learn to control this new - found strength while still dealing with his regular Hogwarts life. I think it's called 'Harry Potter and the Unintended Power'. It has some really cool action scenes where Harry uses his strength to fight off dark creatures.
One interesting fanfiction could be 'Harry Potter: The Speedy Wizard'. In this story, Harry discovers his super speed ability during a Quidditch match. He zooms around the field, leaving everyone in shock. It adds a whole new dimension to his character and the sport of Quidditch.
I'm not sure of a specific one, but generally, in such a fanfiction, Harry's blue hair could give him a new identity. He could use it to his advantage when trying to go undercover in the wizarding world. It would be like a disguise that no one would expect. Writers might explore how his appearance affects his relationships, like how Hermione might react with her logical mind trying to find a way to reverse it, while Ron might just find it hilarious.
There is a fanfiction where Harry has red hair due to a magical mishap. It shows how he tries to deal with this new look while still facing the regular threats in the wizarding world. His friends at Hogwarts have various reactions, some find it hilarious while others are more concerned about the cause of this sudden change.
One possible fanfiction could be 'The Struggle of Harry Potter with Brain Cancer'. In this fic, it might show how Harry copes with the diagnosis while still dealing with his wizarding world responsibilities. It could explore his relationships with his friends, like Hermione and Ron, as they support him through the difficult time.