Well, in the 'harry talks about the dursleys fanfic', it might be fascinating to see how Harry describes their daily routines. It could give us a deeper understanding of the Dursleys' world from Harry's point of view. He might talk about how their obsession with normalcy affected him and how he coped with it during his time living with them.
In this fanfic, an interesting point could be Harry's analysis of the Dursleys' personalities. He might discuss how Vernon's overbearing nature, Petunia's jealousy towards the wizarding world, and Dudley's bullying were all interconnected. Harry could also share how these aspects of the Dursleys influenced his own growth and development, both as a person and as a wizard. This exploration can provide a fresh take on the relationship between Harry and the Dursleys that we didn't fully get in the original series.
Another aspect is the potential for character development. Petunia, for instance, might start to see Harry in a different light. Maybe she has a moment where she realizes the danger he's in from the wizarding world and has a change of heart. This could lead to her secretly helping Harry with things like getting school supplies or protecting him from Vernon's wrath.
The fanfic adds a new dimension to the story. It allows us to see the Dursleys from Harry's eyes in a more in - depth way. He could talk about things like the small acts of kindness or cruelty that the Dursleys showed him, which can change how we view their relationship. Also, it might explore how his time with the Dursleys shaped his view of family and the muggle world in general, thus enriching the overall Harry Potter story universe.
A great 'Harry Potter Dursleys fanfic' might explore the Dursleys' backstory more deeply. For example, it could show how Vernon's hatred for magic and strange things developed over time. Or it could focus on Petunia's envy of Lily's magical abilities and how that affected her relationship with Harry. Some fanfics also imagine a scenario where the Dursleys are magically transported to Hogwarts and have to adapt to the magical environment. They would be completely out of their element, and it would be interesting to see how they interact with the students and teachers.
In some of these fanfics, one interesting plot could be Harry finding solace in an unexpected friendship with a local magical creature that the Dursleys were unaware of. This gives him a sense of purpose and connection outside of the neglect he faces at home.
In some 'Harry Potter and the Dursleys' fanfics, there's a plot twist where the Dursleys are actually protecting Harry from a greater threat that the wizarding world doesn't even know about. They've been cruel to keep him close and safe. Also, there could be a twist where Vernon Dursley has a connection to the wizarding world through his family's past that he's been trying to hide all along, which changes how we view his hatred for magic.
One interesting fanfiction could be about the Dursleys having a change of heart before Harry goes to Hogwarts. Maybe they start to see the magic in him in a different way and struggle with their newfound feelings of protectiveness. It could show a different side of the usually cruel Dursleys.
One popular fanfiction might be about the Dursleys' secret past that somehow ties them to the wizarding world in a more complex way. For example, perhaps there was a wizard in their family line long ago that they've been trying to hide. Another could be a story where the Dursleys have a change of heart much earlier than in the original series and start to embrace Harry's magical nature, leading to all sorts of comical and heartwarming situations as they try to understand the wizarding world. And there could be a fanfiction where the Dursleys are forced to face the consequences of their mistreatment of Harry in a more magical and extreme way, like being haunted by magical apparitions that represent Harry's pain.
A possible plot in this fanfic could be that Harry finds a way to magically swap the Dursleys' positions with his own for a short time. So they have to experience what it's like to be in his shoes. They'd have to live in a small, cramped space, do all the chores, and be treated poorly. Another thing Harry could do is magically make all of the Dursleys' clothes turn into bright pink, frilly outfits that they'd be embarrassed to be seen in. He could also use magic to make the Dursleys' car break down every time they try to go on a trip, just as they used to prevent Harry from having any fun or going anywhere.
Perhaps in the fanfic, a time - traveling wizard goes back to save Harry from the Dursleys. This would lead to a lot of changes in the timeline. Harry might be introduced to magic much earlier and form different relationships. He could also have a different understanding of his parents' history and his own role in the wizarding world as a result of being removed from the Dursleys' environment.
One possible plotline could be how the Dursleys face magical mishaps in their daily lives that drive them crazy. For example, maybe Dudley accidentally gets turned into a pig by a stray spell and the Dursleys have to deal with that chaos. Another could be that they are constantly haunted by strange magical creatures that are attracted to Harry's presence in their house.