You can start by looking on fanfiction websites like Archive of Our Own. It has a large collection of fan - made stories from various fandoms, and there's a good chance you'll find some villager x isabelle fanfiction there.
One popular villager x isabelle fanfiction might be those that focus on their friendship. For example, a story could be about how they work together to organize a village event. They could be planning a flower festival, with villager using their unique skills like fishing to contribute to the decorations, while Isabelle takes care of the administrative tasks and announcements.
One plot idea could be that Isabelle and the villager team up to organize a huge festival in the village. They face various challenges like getting enough resources and convincing all the villagers to participate. Another could be a story where the villager gets lost in a mysterious part of the island and Isabelle goes on a quest to find them. It could also be about them working together to beautify the village and during the process, they discover a long - forgotten secret about the place.
To develop Isabelle's character, focus on her organizational skills. Show her making detailed plans for village events. For the villager, emphasize their relationship with the other villagers. Maybe they are the one everyone goes to for advice on gardening. You can also show their reactions to different situations. Isabelle might be calm under pressure, while the villager could be more impulsive.
A common trope is the 'enemies to lovers' or at least 'rivals to lovers'. Since they have different personalities and ways of doing things in the Shadowhunter world, it can be interesting to see how they overcome their differences. Another is the 'hurt/comfort' trope, where one of them gets injured or is in a difficult situation and the other provides support and care.
I'm not sure which specific 'Mayor X Isabelle' fanfiction is available. You could try searching on fanfiction websites like Archive of Our Own or FanFiction.net. They usually have a wide variety of fan - created stories.
A common theme could be friendship. Mayor X and Isabelle might be shown having adventures together in their town or helping each other out with various tasks.
One popular theme is adventure. Since Toon Link is known for his adventures in The Legend of Zelda series, authors often write about him and Villager going on quests together. Another theme is friendship. It shows how these two characters from different universes can form a strong bond.
One great place to find Clary x Isabelle fanfiction is Archive of Our Own (AO3). There are numerous stories there with different themes and plotlines. Some might focus on their adventures together in the Shadowhunter world, while others could explore a more romantic and emotional side of their relationship.
One plot idea could be that Isabelle and the Mayor have to work together to save the town from a natural disaster. They face many challenges during the process and in the end, their bond grows stronger. Another could be a story where Isabelle discovers a long - lost secret about the Mayor's family and they embark on a journey to uncover the truth. Maybe there could also be a plot where they get into an argument over a new town policy, but then realize they need to find a middle ground for the good of the town.