Another plot idea is to set the fanfic in an alternate universe where Voldemort won the first war. Harry could be in hiding, trying to figure out a way to overthrow Voldemort's regime. This would involve him gathering allies in secret and learning new forms of magic that were previously unknown.
You could also write a fanfic about the Marauders' time at Hogwarts from the perspective of a new character. This character could be a transfer student who gets caught up in their pranks and adventures, and in the process, discovers some secrets about the Marauders that even they don't know about.
One idea could be exploring what would happen if Harry had a twin sister who was sorted into Slytherin. It would add a whole new dynamic to the story, with her having different views and friends than Harry. She could be caught between loyalty to her house and loyalty to her brother.
Another plot could focus on the lives of the secondary characters from the original series. For example, Neville could be the head of Herbology at Hogwarts and discovers a new, dangerous plant that has some sort of connection to an ancient magic. The 'carry on fanfic' could then be about how he and his students deal with it, with some cameos from the main characters.
Well, perhaps a story where some witches and wizards from different houses are transported to a parallel magical world that is in a state of chaos. The magic there is unstable, and they need to figure out how to get back home while surviving attacks from rogue magical beings. They might also have to find a way to cooperate despite their house differences, which adds an interesting layer to the survival aspect.
Well, you could get a tattoo of a character from the fanfic in a unique pose or situation that didn't happen in the original books. For instance, if the fanfic has a scene where Harry Potter is using a new kind of magic, you could get a tattoo of him doing that. Or perhaps a tattoo of the fictional location in the fanfic that was really well - described and has a special place in your heart.
There are also original characters in fanfics that can be amazing spellcasters. A self - inserted character, for example, might bring in new types of magic from a different culture or region, introducing spells that are completely new to the Harry Potter universe, like spells that manipulate time in a more complex way than the Time - Turner.
The fanfic 'All our firsts' might be unique because of its focus on the emotions associated with firsts. In the Harry Potter world, there are so many firsts - first loves, first battles, first losses. This fanfic could really dig deep into how these first experiences emotionally impact the characters. It might show a more vulnerable side of the characters that we don't often see in the official books. Maybe it also has unique interpretations of magic related to these firsts, like a new type of magic that is only accessible during a character's first time facing a certain situation.
A unique aspect of Harry Potter fanfic can be the settings. Some fanfics take place in different time periods within the wizarding world. For instance, a story could be set a hundred years before Harry's time at Hogwarts, showing how things were different back then. Additionally, the exploration of different cultures within the wizarding world is unique. Fanfic authors might delve into how wizarding families from different regions have their own traditions and magic that are not fully explored in the original books. And, of course, the crossovers are quite unique. There could be a Harry Potter fanfic that crosses over with another popular fantasy series, like Lord of the Rings, which combines the magic systems and characters in an interesting way.
One unique aspect is the ability to explore different relationships. For example, in some fanfics, we can see more in - depth relationships between minor characters. Another is the exploration of different time periods or alternate universes. Fanfic writers can create scenarios where Voldemort was never born or where different magical creatures play a more prominent role. Also, the exploration of different magical abilities or spells that were not in the original books is quite interesting.
First, give them a detailed backstory. For example, if your new character is a half - blood wizard, explain how their Muggle and wizarding family influenced them. Second, give them unique traits. It could be a physical trait like a birthmark in the shape of a Patronus, or a personality trait like being extremely superstitious. Third, make sure their actions are in line with their character. If they're shy, they won't be the first to jump into a fight.
In fanfic, Harry Potter might have enhanced occlumency powers. He could be able to completely shield his mind from Voldemort and other dark wizards without much effort. This would give him an edge in battles as his thoughts would be completely private.
The uniqueness of a 'Harry Potter' fanfic often lies in its ability to take a different stance on the existing themes. For instance, if the original series was mainly about good vs. evil, a fanfic could explore the gray areas in between. It might show how some characters who were considered 'evil' had valid reasons for their actions. The character development in fanfics can also be unique. A minor character from the books could be developed into a complex and central figure in the fanfic, with their own backstory and motives that were not fully explored in the original.