One concept could be a story where the Wendigo somehow enters the Hogwarts grounds. Maybe it's drawn there by the dark magic that lurks in the Forbidden Forest. The students and professors then have to figure out how to deal with this new, terrifying threat using both magic and their wits.
Some fanfictions in Harry Potter 2 might play with the idea of the basilisk having different powers or weaknesses. It could also explore the idea of a hidden connection between Ginny and the Chamber of Secrets that goes beyond what was in the original story. There might be fanfictions that change the role of certain characters, like making Neville a more central figure in solving the mystery of the Chamber.
In Harry Potter cyborg fanfiction, there might be the concept of a cyborg Quidditch player. This player could have mechanical wings for faster flying or a built - in broomstick control system for more precise maneuvers. There could also be a story where Voldemort creates cyborg Death Eaters with enhanced dark magic capabilities through mechanical implants. And then there's the possibility of a cyborg Hagrid, with a mechanical arm strong enough to handle the most dangerous magical creatures.
In 'harry potter hokage fanfiction', a cool concept might be the interaction between the different worlds. Picture Hogwarts students visiting Konoha and learning about the ninja way, or vice versa. It could lead to some really unique cultural exchanges and new ways of using magic and jutsu.
Well, one interesting concept could be the way magic is reimagined. Maybe casters in this fanfiction have unique spellcasting styles that are different from the original Harry Potter magic system. For example, they might combine different types of magic in new ways.
Another concept could be the creation of automail in the Hogwarts' workshops. Imagine students in the school's engineering - like classes trying to create automail for various purposes. It could be for a disabled magical creature or for a student who has been injured in a Quidditch accident. This would add a new layer of creativity and innovation to the traditional Hogwarts curriculum.
One interesting concept could be magical ingredients in the bakes. For example, using unicorn hair as a decoration or adding essence of phoenix tears to give the baked goods special properties. Another could be the setting where the baking takes place, like in the Hogwarts kitchens with the house - elves helping or in a wizarding bakery in Diagon Alley.
Another concept could be that the nanites are a new form of magical creature. They could have their own language and culture, and wizards and witches would have to learn how to communicate with them in order to use their powers.
Another concept might be the evolution of characters. The characters could grow and change in unexpected ways. Harry Potter himself might develop new magical abilities or a different personality as the story progresses in this fanfiction. They could also face new challenges related to their evolved selves.
One interesting concept is a crossover with other magical universes like Narnia. It could bring characters from both worlds together, creating new adventures. For example, Harry Potter and the Pevensie siblings might team up to fight a common evil that threatens both their magical realms.
One interesting concept could be the integration of magic from Harry Potter into the post - apocalyptic world of Fallout 4. For example, how wands and spells might be used to combat the various mutated creatures. Another concept could be the Hogwarts Houses being re - imagined within the factions of Fallout 4. Maybe the Gryffindors would be more likely to join the Minutemen, as they are brave and fight for the common good. And the Slytherins might find their place among the more power - hungry groups, though not always in a negative way. There could also be the idea of using Portkeys to quickly travel across the vast wastelands of Fallout 4.