Maybe the OC is a fairy who has been banished from Pixie Hollow. Peter Pan finds her and takes her under his wing. As they explore Neverland together, the OC discovers a hidden treasure that Hook also wants, leading to a series of adventures. And gradually, the OC and Peter Pan form a deep bond.
One idea could be that the OC is a lost girl from another world. She has unique powers that Peter Pan is intrigued by. They team up to fight Captain Hook and his pirates, and along the way, a sweet romance starts to develop between them.
Perhaps in the fanfiction, Tinker Bell gets jealous of Wendy not just because of Peter, but because Wendy starts to outshine her in magic. So, Tinker Bell teams up with Captain Hook in a plot to make Wendy look bad in front of Peter Pan, but in the end, they all realize the importance of friendship.
One idea could be that Peter Pan and his Lost Boys end up in a different Disney world, like the world of Beauty and the Beast. They might mistake the Beast for a new kind of pirate or monster at first. Another idea is that a Disney princess, say Cinderella, gets whisked away to Neverland by Peter Pan. She could teach the Lost Boys some manners while they teach her how to have more fun. Also, Tinker Bell could get jealous of a new Disney character who catches Peter Pan's attention, like Ariel from The Little Mermaid.
One plot idea could be that the OC is a lost girl from another dimension. Peter Pan discovers her and brings her to Neverland. She has unique powers that both fascinate and worry the Lost Boys. Another idea is that the OC is a mermaid who can transform into a human on land. She meets Peter Pan on the shore of Neverland and they embark on adventures together, with her mermaid knowledge helping them in various situations. And a third idea could be that the OC is a fairy who has been banished from her own kind. Peter Pan takes her in and she uses her fairy magic to help him against Captain Hook.
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 idea could be that Peter Pan and Captain Hook are forced to team up to save Neverland from a new, greater threat. Maybe a dark magic is spreading and they have to put aside their differences. Another could be a backstory exploration where we learn that they were once friends and something drove them apart. For example, a misunderstanding about a shared treasure or a girl they both liked in their past.
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 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.