You could also write about the Potter family's influence on the wizarding world in the future. How do they shape Hogwarts or the Ministry of Magic? Maybe Harry's children are at the forefront of some new magical discovery, and the whole family is involved in promoting and protecting it.
One idea could be exploring the long - lost relatives of the Potter family. Maybe there are distant cousins who possess unique magical abilities that have been hidden for generations. Another plot could revolve around the discovery of ancient Potter family artifacts that hold great power and secrets.
One idea could be that the Potter family totem is a phoenix. It represents rebirth and magic, which are very much associated with the Potter family. Harry himself has a connection to the phoenix Fawkes.
One idea could be exploring the hidden magical abilities within the Potter family tree that Harry discovers as he delves deeper into his family's history. Maybe there are long - lost spells or powers that only surface when a Potter is in a certain situation.
One idea could be that Harry is placed with a family of magical creatures protectors. They teach him about the hidden magic in nature and the importance of protecting all magical beings. This could lead to Harry having a different view on magic compared to what he learned at Hogwarts.
One idea could be that Harry and Hermione get married and have a family in a world where Voldemort was defeated much earlier. Their children could inherit both their magical abilities and intelligence, and they might face new threats to the wizarding world that require their combined skills to overcome.
Perhaps the original family had a hidden treasure or a powerful magical artifact. In the fanfiction, Harry and his friends could go on a quest to find it. Along the way, they discover that the original family had ties to other magical creatures, like centaurs or merpeople, and these relationships are crucial in unlocking the location and power of the artifact.
Another plot could focus on how the family magic affects relationships. Maybe Harry uses family magic to strengthen his bond with his children in a way that normal magic can't. He could teach them unique family spells that help them understand their heritage better.
A more complex plot could be that the entire Family Guy cast gets transported to Hogwarts during a school year. Quagmire could be the new Defense Against the Dark Arts teacher, bringing his own unique brand of 'defense' which mostly involves flirting with the female students. Lois could get into trouble for trying to organize a Muggle - style PTA at Hogwarts, and Peter could end up on the Quidditch team as an accidental addition.
One idea could be Harry starting a magical gardening project at Hogwarts. He could be growing all sorts of magical plants and using them for potion - making and to beautify the school grounds. It would be a fun and positive story.
A really cool plot idea could be that they find a lost magical artifact that has the power to change the future of the wizarding world. But it's cursed and they have to figure out how to break the curse. They journey across different magical locations, meet various magical creatures, and use their combined skills to solve the mystery. This kind of adventure - based plot would be exciting and suitable for all audiences.