It's quite an odd combination - Petunia Dursley and a lemon in a Harry Potter fanfic. Petunia is such a complex character in the original series. Maybe the 'lemon' could symbolize something sour in her relationship or life in the fanfic. But as I said, I haven't come across one directly. You could also ask in Harry Potter fan communities or forums if anyone has read such a fanfic.
There could be a very creative fanfic writer out there who has combined these elements. Petunia Dursley was always so bitter and resentful in the books, perhaps the lemon could be used as a metaphorical device in the fanfic. But finding it might be a challenge. You may need to dig deep into the fanfic archives, especially if it's a more niche or less - popular concept.
I'm not sure specifically about a fanfic involving Petunia Dursley and a lemon in the Harry Potter universe. However, there are countless Harry Potter fanfics out there, so it might exist. You could try searching on major fanfic websites like Archive of Our Own or Fanfiction.net using those keywords.
In a more comical plot, the lemon could be a mischievous magical object that keeps causing chaos in Petunia's house. It might make things float or turn into strange creatures. Petunia, being the uptight person she is, has to deal with this lemon - induced mayhem while also trying to keep up appearances in front of the neighbors. This could lead to some really funny situations and a change in her attitude towards the strange and magical over time.
I'm not sure if there are 'popular' ones in the sense that they are widely known and accepted. Lemon fanfictions are a bit of a niche and often not mainstream due to their mature content. But there might be some that have a following within the more hardcore Harry Potter fanfiction community.
By focusing on their shared past traumas. For example, both have had experiences related to Lily's death in different ways. Harry lost his mother, and Petunia lost her sister. They could start to bond over this common pain and gradually move towards a more positive relationship.
Finding 'Harry Potter x Petunia Dursley' lemon fanfiction might be a bit tricky. First of all, the relationship between them in the original series is quite antagonistic. And secondly, 'lemon' content often goes against the terms of many platforms. But if you really want to look for it, you could join some Harry Potter fanfiction communities and ask around, though you may be met with some disapproval due to the nature of the content. Fanfiction should ideally be about exploring different aspects of the characters in a more positive and non - inappropriate way.
There could be a fanfiction where Petunia Dursley discovers some hidden magic within herself and this somehow links her more closely to Harry. In this scenario, the story could take on a whole new dimension. But as for a particular 'Harry Potter and Petunia Dursley lemon fanfiction', it's hard to point out one without really searching through various fanfiction sites. Also, remember that lemon content often implies sexual undertones which may not be appropriate for everyone.
A possible plot could be a time - travel scenario where Harry and Petunia are sent back in time. They have to rely on each other to survive in the past, and in the process, they learn more about their family history and each other. This shared adventure could lead to a deeper understanding and a different kind of relationship between them.
In the fanfic, the cock cage could make Petunia feel a sense of responsibility. Maybe she realizes that she has to keep it away from Dudley or Vernon, and in doing so, she starts to show a more protective side. This could lead to her developing a new understanding of Harry, who has always been in a world full of strange and potentially dangerous things. She might start to see him as a person who has had to deal with a lot, just like she has to deal with this strange object now.
One possible fanfic could be about Petunia Dursley finding a magical toy that once belonged to Harry Potter's parents. Maybe she discovers it in the attic and it starts to show her memories of Lily and James Potter. She realizes that she has been wrong about Harry all along and decides to change her attitude towards him.
Well, it depends on your definition of 'good'. Some might focus on the complex relationship between Petunia and the magical world in the context of Harry Potter, while others might take a more creative or off - beat approach. You really have to dig through different works to find one that suits your taste. There could be some that explore Petunia's character in depth, perhaps showing her envy of the wizarding world in a new light, or creating a scenario where she has a more positive interaction with the magical elements, which could be quite interesting to read.
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.