One idea could be a story where in the Once Upon a Time universe, a character gets a magical haircut. Maybe the Evil Queen's hair is cut by a mysterious stranger, and with the loss of her long, flowing locks, she loses some of her power. Her vanity was tied to her hair, and now she has to adapt to a new look and a new level of strength.
Perhaps there could be a fanfiction where a character gives a haircut to a beastly figure. In the style of the Beauty and the Beast story within the Once Upon a Time framework. The haircut is a symbol of transformation. As the hair is trimmed, the beast becomes more human - like, not just in appearance but also in his behavior and attitude. It could be a story of how outer change can lead to inner change.
Rumpelstiltskin could be the subject of a haircut fanfiction. Maybe he has a haircut that is part of a deal. A young girl offers to cut his wild, unruly hair in exchange for a favor. As she cuts his hair, she discovers that there are secrets hidden within his hair. Each strand seems to hold a memory or a piece of magic, and by cutting his hair, she unknowingly releases some of his power into the world, creating chaos.
A third idea is to create a fanfiction where Snow and Charming have to deal with an evil curse that affects only their relationship. They start to forget their love for each other, and the story could revolve around them trying to break the curse by going on a journey together, rediscovering the reasons they fell in love in the first place.
One idea could be exploring the backstories of the lost boys in more detail. Maybe one of them has a hidden connection to a character from the outside world. Another plot could involve a new villain coming to Neverland who has a different kind of magic that challenges Peter Pan. Also, a story about Wendy's granddaughter returning to Neverland to find a lost family heirloom could be interesting.
One idea could be to have Peter Pan meet characters from other parts of the Once Upon a Time realm in a friendly competition. For instance, a race through the magical forests of Neverland against characters like Alice from Wonderland. This would be a fun and exciting story without any inappropriate content.
One idea could be that Mulan meets a magical creature in the forest during her travels. This creature could give her a special power or task. For example, it could be a phoenix that asks her to protect a hidden village from an approaching evil force. Mulan would then have to use her skills and the new power to prepare the village for battle and lead them to victory.
Family relationships are a big theme. Some fanfics focus on the family dynamics between characters like the Charmings and their descendants. There are also fanfictions that revolve around the theme of identity. Characters in 'Once upon a time' often have complex identities, and fan writers like to dig deeper into how these identities are formed and how they can change over time.
A 'found family' trope is quite common. Characters who were alone or estranged in the show form a close - knit family in fanfiction. For instance, Henry might bring together different characters who then become his new family. Also, the 'hurt/comfort' trope, where a character is hurt (physically or emotionally) and another character comforts them, is frequently used in Once upon a Time fanfics.
One idea could be that Belle and Anna, both orphans, meet in a magical forest. They discover they have a shared ability to communicate with forest spirits. Together, they embark on a journey to find a hidden library that is said to hold the secrets of their pasts. Along the way, they face challenges from an evil sorcerer who wants to stop them from reaching the library.
One idea could be to explore Rumpelstiltskin's past. Maybe he wasn't always so obsessed with gold and deals. He could have had a family or a love once that was taken from him, which led him down this dark path. Another idea is to give him a chance at redemption. A young girl could come into his life who is kind and sees the good in him, and through their interactions, he starts to change.
Well, you could create a 'once upon a time parody fanfiction' where the magic in the fairytale world is actually just advanced technology that the characters don't understand. For instance, the fairy godmother's wand could be a high - tech device from a more advanced civilization. Also, you could make the villains into bumbling idiots instead of the menacing figures they usually are. This would add a lot of humor to the story.