Perhaps in the fanfiction, Voldemort makes an alliance with Captain Hook. Harry and Peter have to team up to fight against this unexpected union. Peter's ability to fly and Harry's magic skills would be put to the test as they try to outwit their enemies. They could also learn from each other's strengths and weaknesses during this adventure.
One idea could be that Harry Potter somehow gets transported to Neverland. He could teach the Lost Boys some magic, and they in turn could show him how to have fun in a more carefree way than at Hogwarts. Another idea is that Peter Pan visits Hogwarts and causes chaos with his flying and mischievous nature among the students and professors.
One idea could be that Peter Pan takes Harry Potter to Neverland to escape from Voldemort. In Neverland, Harry discovers new magical abilities that are different from those in the wizarding world. He could learn to fly in a more carefree way like the Lost Boys and use his magic in new and exciting environments.
One idea could be exploring Wendy's life back in London after her adventures in Neverland. Maybe she's having a hard time adjusting and misses Peter terribly. Another could be a story where Peter brings some of the Lost Boys to London for a visit and the chaos that ensues. A third idea might be a tale where Wendy's younger siblings grow up and start to doubt the existence of Peter Pan, but Wendy has to convince them he's real.
One plot idea could be a modern - day Peter Pan who discovers the real world has changed a great deal. He has to adapt to technology and new social norms while still maintaining his Neverland spirit. Another could be a story where Peter Pan meets a character from another fairy - tale realm and they go on an adventure together in Neverland. Maybe a girl from a strict, old - fashioned society stows away on his ship and he has to teach her how to have fun and be free.
One possible plot could be that Peter Pan takes Harry Potter and his friends to Neverland. There, they encounter the Lost Boys and Tinker Bell. Harry discovers new magic in Neverland that's different from Hogwarts magic. They could also face a common enemy, like a dark force that's trying to take over both Hogwarts and Neverland. The wizards could teach the Lost Boys some basic spells, and in return, the Lost Boys could show them how to fly better than on broomsticks.
One idea could be that Baelfire gets lost in Neverland and Peter Pan has to decide whether to help him or use his situation to his advantage. Maybe Baelfire has a special power that Peter Pan wants for himself.
One idea could be that Peter Pan and Merlin meet in a magical realm between Neverland and Camelot. They team up to fight a common enemy, like an ancient evil sorcerer who is trying to steal the magic from both their worlds. Peter's ability to fly and his eternal youth could be combined with Merlin's powerful magic skills to create a really cool adventure.
One idea could be that Emma, a modern - day girl, somehow gets transported to Neverland. She then has to learn to adapt to the strange and magical world. Peter Pan is initially suspicious of her but as they go on adventures together, like facing Captain Hook, they start to form a strong bond.
One idea could be that Moira gets lost in Neverland and Peter Pan has to find her before the pirates do. He discovers new parts of Neverland in the process.
A possible plot is that Wendy gets lost in a previously unexplored part of Neverland. Peter Pan and the Lost Boys go on a frantic search for her. While lost, Wendy discovers a hidden tribe of magical creatures that are shy and have been avoiding contact with the Lost Boys. Wendy befriends them and they help her find her way back. This could lead to a new alliance between the Lost Boys and these creatures.
Well, a really cool plot for Tinkerbell and Peter Pan fanfiction might be that Tinkerbell accidentally breaks a powerful magic item in Neverland. This causes chaos as the magic starts to go haywire. Peter Pan and Tinkerbell then have to go on a quest to find the pieces and fix it. Along the way, they might encounter some old foes who are taking advantage of the situation. Also, they could discover secrets about Neverland's past that they never knew before. This would not only test their friendship but also their courage and wits.