A common 'do over' in Harry Potter fanfiction is related to character relationships. Harry could have a 'do over' with his relationship with Hermione. Maybe they become romantically involved from the start instead of just being friends. Or with Ron, if they had a better understanding of each other's insecurities earlier. There are also 'do over' scenarios where Dumbledore makes different decisions, like being more open with Harry about his plans, which would greatly impact Harry's journey.
One popular 'do over' concept is having Harry grow up in a different environment. For example, if he was raised by Sirius Black instead of the Dursleys. This could change his personality and how he approaches magic. Another is if he was sorted into a different house. Say he was sorted into Slytherin, it would completely shift his relationships and the way the story unfolds. Also, some fanfictions have a 'do over' where Voldemort is defeated earlier in a different way, which then changes the post - war Hogwarts and wizarding world.
Well, in some 'do over' Harry Potter fanfictions, Harry might redo his school years with the knowledge he gained from the original timeline. So he could avoid certain mistakes, like not trusting Snape earlier. He might also use his knowledge to better prepare for the battles against Voldemort. Another concept is a 'do over' for the wizarding world's society. For instance, if the Ministry of Magic had been reformed earlier, it would affect how magic is regulated and how the characters interact with the law.
One concept could be a magical dinosaur reserve. Imagine a place similar to the Hippogriff reserve, but for dinosaurs. Another could be a time - travel story where Harry and his friends go back in time to study dinosaurs and end up having to use their magic to survive. Also, there could be a fanfic where a dinosaur - like creature is a new discovery in the wizarding world and causes a stir at Hogwarts.
Some fanfictions focus on the reincarnation as a way to fix the mistakes of the original story. The SI (Self - Insert) character, having read the books or seen the movies in their past life, tries to prevent tragedies. For instance, they might try to save characters like Sirius Black or Fred Weasley. They also often bring in modern concepts or ideas from their previous life into the wizarding world, creating interesting cultural clashes and new plotlines.
Well, in Harry Potter adult fanfiction, piercings could be used to represent different spells or potions. Maybe a piercing in the shape of a cauldron for potions enthusiasts. Or a piercing that has a charm - like design, representing a particular spell. It could also be that characters in the fanfiction get piercings as a sign of their allegiance to a certain wizarding group or ideology. For instance, Death Eaters might have a specific and rather dark - themed piercing, while the Order of the Phoenix members could have a more positive and light - inspired one.
One interesting concept could be how the beast souls change the characters' personalities. For example, if a character takes over the soul of a brave and fierce lion - like beast, they might become more fearless in the face of danger. It adds a new layer of depth to the characters.
Harry Potter himself is still very popular. Since it's a 'do over', readers are interested in seeing how he might change things with his knowledge from the first time around. He could be more confident or make different choices in relationships, like with his friends or romantic interests.
One popular concept is the idea of a 'Mirror Dimension' in Harry Potter fanfiction. It's like a parallel world that reflects the main HP universe but with some key differences. Another is the 'Time - Locked Dimension' where time moves at a different pace. This can create interesting scenarios where characters from the normal HP world enter and have to adapt quickly.
One interesting concept could be exploring more about the Marauders' time at Hogwarts. Fanfiction might expand on their adventures, like pranks they played that were never mentioned in the original book. Another could be different interpretations of Sirius Black's escape and his relationship with Harry during that time.
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.
One interesting plot twist could be that Voldemort is actually being controlled by an even darker force all along. In the original series, Voldemort seems to be the ultimate evil, but in a 'do over' fanfiction, this new revelation would completely change the power dynamics and the goals of the heroes.
Well, some might have a concept where Harry Potter himself has a harem of followers or friends who are sort of like 'slaves' in the sense that they are extremely loyal and dedicated to him. It could involve characters like Hermione and Ron being part of this group, and they all work together to face new threats in the wizarding world that J.K. Rowling didn't write about. But this is a very different take on the original story and can be quite controversial as it changes the nature of the relationships in the series.