There's 'The Collar's Significance'. In this fanfic, the collar is enchanted and has a deep connection to Hermione's heritage. Sirius Black discovers this and they embark on a journey to understand its true meaning. It's full of mystery and their interactions are really well - written.
To start writing a Hermione Granger and Sirius Black collar fanfic, you need to create a unique setting. Maybe it's in a hidden part of Hogwarts where the collar was found. Then, introduce the characters. Show how Hermione's logical thinking clashes with Sirius's more impulsive nature when they first encounter the collar. As you write, keep in mind how the collar will change their relationship throughout the story.
Some fanfics use unique items like a collar to explore different aspects of the characters. In a story with Harry Potter and Hermione Granger, the collar could represent a form of restraint, either self - imposed or magically forced. This could lead to a plot where they have to break free from it, both literally and metaphorically, as they face challenges in the wizarding world.
A fanfic could also center around a mystery related to a collar found in Hogwarts that Hermione and Harry investigate together. They suspect it might be related to a secret society or an old magic. As they dig deeper, they discover that the collar has the power to unlock hidden passages in the castle, and they must use it to stop a dark force from awakening.
A fanfiction might depict Sirius and Hermione as co - teachers at Hogwarts in an alternate universe. Sirius could teach Defense Against the Dark Arts in his own unorthodox way, and Hermione could bring in her academic knowledge. Their teaching styles would be very different, but they would complement each other. The students would be both fascinated and a bit intimidated by this pair. They would have to deal with things like classroom pranks and students who are having trouble with the coursework, all while building a unique bond.
One possible fanfiction could be about Sirius mentoring Hermione. Sirius has a wealth of knowledge about the wizarding world, especially the darker aspects. He could teach Hermione things that she wouldn't learn in the classroom. For example, he might share his experiences with the Dark Arts and how to defend against them in a more practical way than textbooks. Their relationship could start off rocky as Hermione is a rule - follower and Sirius is more of a rebel. But over time, they come to respect and learn from each other.
The plot could be that a mysterious collar is found in the Forbidden Forest. Hermione, being curious, examines it and accidentally activates it. The collar then starts to affect her magic in strange ways. Harry has to help her figure out how to remove it while also dealing with threats from dark forces who are interested in the collar's power.
Perhaps the collar is a cursed object that Hermione and Harry need to deal with. It could be causing strange behavior among the students. For instance, those who touch it start acting like animals. Hermione would use her extensive knowledge of magic to research a solution, while Harry would be more hands - on, trying to keep the affected students safe.
One common theme is the idea of defying the norm. Since their relationship is not part of the original story, it goes against what's expected. Another theme could be the exploration of time and its impact. For example, if Sirius somehow survives and meets Hermione at a different point in time. There's also often a theme of love that transcends boundaries, whether it's the age gap or their different social standings within the wizarding world.
There are quite a few out there. One interesting fanfiction might be on Archive of Our Own. You can search for tags related to Sirius Black and Hermione Granger. The storylines often explore unique relationships and interactions between the two characters that are not part of the original canon. However, the quality can vary greatly, so it's important to read reviews or summaries before diving in.