Here's another plot. There's a misunderstanding where Lucas thinks Riley has fallen for someone else, say a guy from a different school who she's been working on a project with. In reality, Riley just admires the other guy's intelligence for the project. Meanwhile, a girl from Lucas' past comes back into his life and has a claim on him. This forms a complex love triangle situation with lots of room for drama and relationship exploration.
Well, perhaps Maya starts to develop a crush on Lucas while he still has feelings for Riley. Maya feels guilty about it but can't help how she feels. Meanwhile, Riley is oblivious to Maya's feelings and keeps trying to push Lucas and Maya together as friends, which only complicates the situation more. This could lead to a lot of emotional turmoil and interesting character development.
One idea could be a crossover where characters from both shows meet in a shared universe. For example, Cory and Topanga from 'Boy Meets World' could meet Riley and Maya from 'Girl Meets World' and they all go on an adventure together in New York City. They could help each other with their personal and relationship problems, sharing their different experiences from their respective shows.
One idea could be that Riley and Maya are now teachers at their old school. They have to deal with a new generation of students who are facing different but equally challenging problems. It would be interesting to see how they use their own experiences growing up to guide these kids.
One idea could be Ginger getting involved in a school project that goes awry but in the end teaches everyone a valuable lesson about teamwork. For example, she might be part of a group making a short film and they face issues like equipment failure and creative differences.
One idea could be Lucas having a secret talent that he reveals during a school competition in the fanfiction world. For example, he might be an amazing singer but has been too shy to show it until a talent show episode.
One idea could be Riley and her friends from Girl Meets World somehow end up at Hogwarts through a magical portal. They could be sorted into different houses and have to navigate the challenges of Hogwarts life while also bringing their own unique personalities from Girl Meets World. For example, Riley's positive attitude might clash with some of the more traditional Hogwarts ways at first.
Some interesting fanfiction ideas could involve character growth. Maybe write about how a minor character from 'Boy Meets World' gets a chance to shine in 'Girl Meets World'. For instance, Minkus could have become a successful scientist and he comes to give a talk at the school in 'Girl Meets World'. Or you could focus on the friendships. Write about how the friendships in 'Boy Meets World' influenced the way friendships are formed in 'Girl Meets World'. Like how Cory, Shawn and Topanga's friendship was a model for Riley, Maya and Farkle.
One idea could be to write a fanfiction where the girl travels to different historical periods she learned about in school and has adventures there. Another could be that she discovers a hidden talent for magic and has to keep it a secret while still living her normal life. Maybe she also befriends an alien who is disguised as a human at her school.
One idea could be that Kagome starts to develop feelings for Sesshomaru while still loving Inuyasha. Sesshomaru, on the other hand, is conflicted because he has his own pride and his past views on humans. This would create a very tense love triangle as Inuyasha would be jealous and Sesshomaru would be struggling with his new - found emotions.
One idea could be that Bella has to choose between Edward and Jacob based on a series of challenges set by an ancient vampire council. This would add a new layer of drama and force her to really examine her feelings for both of them.
One idea could be that a character in Folklore is caught between two lovers from different worlds. For example, a modern - day person and a magical being from the Folklore realm. The modern person offers a new kind of love with technology and new experiences, while the magical being offers a connection to the old, enchanted ways. Another plot could involve a love triangle where one person is in love with a hero from a Folklore story, but that hero is already betrothed to a powerful figure in the Folklore world. This could lead to a lot of secrecy, jealousy, and difficult choices. A third idea is that a character discovers they are part of a Folklore prophecy that involves a love triangle. They have to figure out who they truly love while also fulfilling their role in the prophecy, which might involve saving their world or something similar.