What are some interesting plots in 'Harry Potter chained up Dursley's fanfiction'?

There could also be some of Harry's wizarding friends like Hermione and Ron. Even though they may not be physically present at the Dursleys' all the time, they could play important roles. For example, they might be trying to find a way to get to Harry and free him. Their loyalty and friendship for Harry could be a major theme in the fanfiction as they strive to overcome the obstacles in their way to reach Harry.

One possible plotline could be Harry finding a way to break free from the chains and use his magic to confront the Dursleys about their mistreatment. Another could be the Dursleys realizing the error of their ways after chaining Harry up and having a change of heart. Or perhaps there are magical forces at work that lead to a series of adventures while Harry is still chained, like dealing with strange creatures that are attracted to the situation.

One interesting 'Harry Potter Dursley fanfiction' could be about Dudley Dursley having a change of heart after the war. He realizes how cruel he and his family were to Harry and tries to make amends. Maybe he starts to study magic in secret, trying to understand the world he once shunned.

There might be a fanfiction where the Dursleys are forced to enter the wizarding world due to some magical accident. This could lead to all sorts of comical and tense situations as they struggle to adapt to a world they have always despised. For example, Vernon Dursley having to deal with talking portraits or flying broomsticks.

There might be a fanfiction where Dudley gets involved in a magical adventure accidentally. For example, he stumbles upon a magical object that was meant for Harry but now has drawn him into a dangerous yet exciting situation in the wizarding world. He has to learn to rely on his own courage and the help of some unlikely allies.

One interesting 'Harry Potter Petunia Dursley' fanfic could be one that explores Petunia's childhood and how her relationship with Lily might have affected her view of Harry. For example, a fanfic could show that deep down, Petunia was always a bit envious of Lily's magical abilities, but also loved her sister in a complicated way. This envy could have then translated into her cold treatment of Harry.

One interesting fanfiction could be about Vernon Dursley having to face a magical threat in the Muggle world on his own. He might have to rely on some of the little knowledge he has about the wizarding world through Harry. Another could be a story where Vernon and Harry are forced to work together during a crisis that affects both the Muggle and wizarding communities, changing their relationship completely. There could also be a fanfiction exploring Vernon's past and how it might have influenced his treatment of Harry, and then how things could have been different if certain events in his past were changed.

One interesting fanfiction could be about Vernon Dursley's perspective during the time when Harry first received his Hogwarts letter. It might explore his extreme reactions and the inner turmoil he felt at the thought of magic being real. Another could focus on a situation where Vernon has to interact with the wizarding world in an unexpected way, like when he accidentally stumbles into Diagon Alley.

One interesting fanfiction could be about Dudley having a change of heart and secretly helping Harry in the wizarding world. Maybe he discovers some magic ability of his own, which is a total twist from the original story.

There are fanfictions where Petunia has a change of heart towards Harry. For example, she realizes the error of her ways after seeing how much danger Harry is constantly in at Hogwarts. She then tries to make amends by secretly helping him, like sending him care packages with useful Muggle items that can be adapted for magical use.