One idea could be exploring the magical preparations that took place before his birth. Maybe there were ancient spells cast to protect him. Another could be focusing on his parents' emotions during that time. For example, how Lily was feeling knowing Voldemort was a threat. And perhaps a plot where the wizarding community was secretly planning something in case Voldemort attacked right after Harry was born.
In some fanfics, Harry's birth name might be used as a powerful tool. For example, his real name could have been enchanted by his parents in a way that, when discovered and spoken by him at a crucial moment, could unlock a hidden power. It could also be that his birth name is part of a prophecy that was misinterpreted all along, and the correct understanding of it changes the whole perception of his destiny.
A great plot might be about the magical elements involved in the birth. Since they are in the wizarding world, perhaps there are special spells or potions that help with the process. Ginny could be using her natural magical abilities in an unexpected way during labor. And Harry could be worried about protecting his family from any potential dark forces even during this joyous time.
One idea could be that Harry discovers he has a magical ability that allows him to give birth to kittens as a form of new magic. The kittens could have special powers and Harry has to protect them from those who want to use the kittens for evil.
In this fanfiction, perhaps it could lead to a whole new set of adventures for Harry Potter. He might have to raise these pups in a world full of dark magic threats, adding a new layer of challenges to his story. And it could also change his relationships with his friends, like Hermione and Ron, as they might have different opinions on this strange event.
One plot idea could be that Jasmine Potter has a special power that Harry doesn't. For example, she can communicate with magical creatures in a unique way. This power could lead her to discover a hidden secret about Hogwarts that's crucial for the fight against Voldemort.
One idea could be that the scarecrow comes to life and becomes a magical creature that helps Harry Potter in a dangerous task. Maybe it has the ability to sense dark magic and warns Harry of approaching threats.
Perhaps Orochi is a hidden figure in the history of the wizarding world that has been forgotten. Harry discovers some old texts in the Hogwarts library that mention Orochi in relation to a long - lost magical artifact. This leads him and his friends on a quest to find the artifact before it falls into the wrong hands, as it has the power to either control Orochi or be used by Orochi to gain ultimate power over the wizarding world.
One plot idea could be that Harry and Angelina team up for a special Quidditch training session for the younger students. They discover a new flying technique together that gives Gryffindor an edge in future matches. Another could be that they go on a secret mission within Hogwarts to uncover a hidden artifact that has been causing strange magical disturbances. And a third idea is that Angelina gets injured during a match and Harry uses some of his unique magical skills, learned from his various adventures, to help her recover faster than normal.
One idea could be a story where a character has a special power to resist Dementors' effects more than others. Maybe they discover a hidden spell or have a unique magical ability that they use to fight off Dementors when others are in danger. For example, a young witch or wizard who can emit a positive energy that counteracts the Dementors' despair.
One idea could be Norberta getting lost in the Forbidden Forest and Harry has to find her. Another could be Norberta growing ill and Harry, with his knowledge of magical creatures, tries to heal her. Maybe Norberta could get into trouble with some other magical creatures and Harry has to step in to protect her.