Well, perhaps a plot where Harry and Angelina find themselves in a time - travel adventure. They end up going back in time to the founding days of Hogwarts and have to figure out how to get back to their own time while also ensuring they don't disrupt the past too much. Or it could be that they are both chosen for a special inter - house task force to deal with a new threat to the school, like a group of dark wizards trying to infiltrate Hogwarts under the guise of new students. They have to rely on each other's skills and instincts to expose the threat.
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.
A really interesting plot could be that Angelina discovers she has a rare magical ability that she's been suppressing. Harry, being the curious and helpful person he is, decides to help her explore and control this ability. As they work together, they start to develop a deeper bond. Maybe there's also a sub - plot where some jealous students try to create problems between them, thinking they are getting too close. But in the end, their friendship or potential relationship grows stronger as they overcome these obstacles.
Perhaps the pregnancy causes Angelina to discover new magical abilities within herself. As she is carrying new life, she starts to have prophetic dreams about the future of the wizarding world. This could lead her on a journey to find out more about these dreams and how they might be related to her unborn child.
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 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.
A great plot for a Potter Manor fanfiction could involve a mystery that surrounds the manor. For instance, strange noises at night lead Harry to uncover a long - forgotten chamber. It could also be about Harry restoring the manor to its former glory, perhaps with the help of Hermione's research on ancient magic used in the construction of such manors.
Perhaps in the fanfiction, Snape and Harry are forced to team up to defend Hogwarts against a new, unknown dark force. They have to rely on each other's skills and knowledge, with Snape using his potions expertise and Harry his courage and Gryffindor - like bravado. Along the way, Snape shares some of his own experiences with dark magic and how to combat it, making Harry a more well - rounded wizard.
One idea could be that Tonks discovers a hidden vampire community in the wizarding world while on a mission related to Harry Potter. Maybe the vampires are being wrongly accused of attacking wizards, and Tonks, with Harry's help, tries to uncover the truth.
One idea could be that Harry discovers a new spell that can penetrate Voldemort's dark magic defenses and uses it to shoot him. Another could be that Harry teams up with some unexpected allies, like the house - elves, who help him get in a position to shoot Voldemort. Maybe Harry has to sacrifice something important, like his invisibility cloak, to gain the power needed to fire the shot that will defeat Voldemort.
One plot idea could be that Harry discovers a hidden diary of Helena Ravenclaw that reveals ancient spells and secrets of Hogwarts. This could lead him on a quest to uncover the true history of the school and his own connection to it. Another could be that Helena's spirit guides Harry through a difficult trial in the Room of Requirement, using her wisdom to help him make the right choices.