There are fanfictions that focus on the relationships between characters in a different light. For instance, a story about Hermione's life if she had been sorted into Slytherin instead of Gryffindor. In this audiobook fanfiction, we could see how she might have interacted with Draco Malfoy and other Slytherins, and how her character would have developed differently. It could be a really fascinating exploration of the 'what - ifs' in the Harry Potter universe.
You can start by looking at popular fanfiction websites like Archive of Our Own (AO3). It has a large collection of Harry Potter fanfiction, and you can filter the results to show only audiobook - related ones. Also, many of the stories on AO3 have user ratings and reviews, which can help you find high - quality ones.
The Harry Potter prequel gives some backstory. It might explore the early days of Hogwarts, the founders' relationships perhaps. For example, it could show how Salazar Slytherin's ideas about pure - blood wizards started to create division among the founders. But the details are not fully explored in the main series, so we can only guess based on the bits and pieces we know from the original books.
In 'Harry Potter and the Chamber of Secrets', Harry has a horrible summer at the Dursleys. He then gets rescued by Ron in a flying car. At Hogwarts, students start getting petrified. It turns out that Voldemort's memory in a diary is controlling Ginny and has opened the Chamber of Secrets. Harry battles a basilisk and destroys the diary, saving Ginny and Hogwarts.
The 'War Horse audiobook full story' is centered around the relationship between the horse Joey and the young boy Albert who loves him deeply. When Joey is sold to the army, Albert is heartbroken. Joey then has to endure the hardships of war, facing battles, making friends with other horses and soldiers. It shows the brutality of war from the perspective of an innocent horse, and also the bonds that can form between different beings in such extreme circumstances. The story is a moving tale of loyalty, love, and survival during the chaos of war.
The full names of the seven Harry Potter books are:
Harry Potter and the Sorcerer's Stone
Harry Potter and the Chamber of Secrets
Harry Potter and the Prisoner of Azkaban
Harry Potter and the Goblet of Fire
Harry Potter and the Order of the Phoenix
Harry Potter and the Half-Blood Prince
Harry Potter and the Deathly Hallows
The story is about Harry Potter's third year at Hogwarts. Sirius Black, an escaped prisoner from Azkaban, is believed to be after Harry. But in the end, it turns out Sirius is Harry's godfather and was wrongly imprisoned. Harry and his friends also learn about time - turners and use one to save Sirius and Buckbeak.