Maybe Puck gets accidentally transported to the wizarding world. He teams up with Harry Potter to find a way back to his own realm while also helping Harry in his fight against Voldemort. For example, Puck could use his ability to create illusions to deceive the Death Eaters.
One idea could be that Puck uses his mischievous magic to play pranks on Hogwarts students, causing chaos in the halls. Harry then has to figure out how to stop Puck without using too much force.
In this fanfiction, it could be interesting if the pregnancy is a result of some magical accident. For example, a spell gone wrong. Then they have to figure out how to handle this new situation. They might start learning about the responsibilities of parenthood together. Sabrina could be worried about how to balance her normal life with the upcoming motherhood, and Puck might be trying to figure out how to be a more responsible partner. As they progress through the pregnancy, they could learn a lot about themselves and each other.
One idea could be that they initially struggle with the news but then grow closer as they prepare for the baby. For example, Puck might start taking on more responsibilities like getting a job to support them.
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.
A really interesting plot could be that their new - found sibling relationship causes a stir in the Glee club. Some members might be skeptical, thinking it's a ploy for more attention. Meanwhile, Rachel and Puck have to deal with the fact that they have different friends in the club. They could have to navigate through the club politics while also getting to know each other as siblings. For example, Puck's bad - boy image might clash with Rachel's more uptight personality at first, but they gradually learn to accept and even complement each other.
Perhaps in the fanfiction, Finn and Puck find themselves in an alternate universe where being gay is the norm in the glee club. This allows them to freely explore their relationship without the fear of judgment. They could then face the challenge of how to bring this new - found confidence back to their original world.
Maybe there's a situation where Sabrina and Puck are magically swapped in abilities. Puck has to deal with Sabrina's normal life problems while Sabrina has to handle Puck's magical chaos. This could lead to some really funny and also heart - warming moments as they understand each other better.
One interesting plot idea could be exploring what would happen if Harry had a different upbringing, like being raised by the Malfoys. It would completely change his view of the wizarding world and his relationships. Another idea might be a time - travel fanfic where Harry goes back to the Marauders' era and interacts with his parents and their friends. This could lead to him preventing certain tragedies or changing the future in unexpected ways. And then there's the concept of a fanfic where the roles are reversed, and Voldemort is the one trying to protect the wizarding world from a greater evil, with Harry being the main antagonist.
A traveler could be from a different magical realm entirely and come to the Harry Potter universe. They bring with them unique magical abilities that both fascinate and frighten the wizards in the Harry Potter world. This could lead to a series of adventures where they either share their knowledge or are hunted down by those who fear the new magic they possess.
One idea could be that Hecate, being the goddess of magic, takes Harry Potter under her wing secretly to teach him ancient and powerful magic that Dumbledore doesn't know. This could lead to Harry having new abilities to fight Voldemort.
A possible plot in Harry Potter Planeswalker fanfiction is that a Planeswalker accidentally brings a dangerous creature from another plane into the Hogwarts grounds. This causes chaos as the teachers and students have to figure out how to deal with it. It could also be that a Planeswalker has a special connection to the magic in the Harry Potter world, like being able to sense the presence of magic in a way that wizards can't. They could use this ability to discover hidden secrets about Hogwarts or the wizarding families. Maybe a Planeswalker is on a quest in the multiverse and the Harry Potter world is just one stop on their journey, and their actions in the wizarding world have consequences for their overall mission.