Sure, 'Harry's Snake Heritage' is a good one. In it, Harry finds out he has snake blood when he starts having strange dreams. The plot then unfolds as he tries to uncover the mystery behind it, all while dealing with Voldemort's return.
There's a fanfiction called 'The Snake Within Harry'. The plot is quite interesting as it shows Harry's transformation not just physically but also mentally. He has to adapt to his new snake - like qualities, and there are parts where he uses these qualities to his advantage in battles against Death Eaters. It also has a sub - plot about how the wizarding world reacts to his new form.
I'd recommend 'Snake - Tainted Harry'. The plot is centered around Harry being part snake due to a dark spell that was cast on his family long ago. As he discovers this, he has to find a way to break the spell's hold on him. Along the way, he forms an unlikely alliance with a group of Slytherins who are also interested in the dark arts related to his condition.
I'm not really into that specific kink in fanfiction. However, there are many great 'Harry Potter' fanfictions that focus on the relationship between Harry and his snake, Nagini, in a more general and non - kink way. You can try searching on platforms like Fanfiction.net or Archive of Our Own using keywords like 'Harry Potter and Nagini relationship' to find some good reads.
I'm not sure about a specific title right now, but in general, fanfictions where Harry is a snake animagus often play with the idea of his connection to Slytherin. They might show how he uses his snake form to access parts of Hogwarts that are otherwise off - limits, or how he uses his new form to communicate with magical snakes and gain knowledge that is crucial for his battles.
Well, in this fanfiction, perhaps the snake is a magical guide for Harry. It could lead him to hidden places in Hogwarts. For example, it might show him secret passages that were previously unknown, adding an exciting new dimension to the story. This could also change the dynamics of his relationships with other characters, as he now has this special connection with the snake.
Another possible plot development is that the snake is actually a transformed wizard or witch under a curse. Harry, during the encounter, discovers this and tries to find a way to break the curse. This could involve a long and difficult journey, seeking rare magical ingredients and spells, and facing many challenges along the way. It could also bring up some moral dilemmas for Harry, like whether to trust the snake - who was once a human - completely or not.
In such a fanfiction, a possible plot point is his social interactions. He might be more isolated at first because of his unusual upbringing. However, this could also lead to him making very strong and loyal friends later. Also, his skills in magic might be more focused on defensive and survival magic, given his snake - raised background.
One possible plot line could be that the snake helps Harry in his battles against the Dark Arts. For example, it could use its unique abilities to sense danger and warn Harry in advance.
Well, one interesting plot point could be how Harry adapts to his new snake form. Maybe he discovers new abilities like slithering really fast or having a heightened sense of smell. Another could be how his friends react. Do they recognize him right away or is it a struggle? And then there's the whole aspect of how he communicates in his snake form. Does he hiss in a way that can be understood by other magical creatures?
Maybe Harry could use some of his magic skills to assist the Avengers in a battle against a powerful enemy. For example, he could use a spell to freeze the bad guys momentarily while the Avengers strike.
There is 'Snake's Path in Konoha'. This fanfiction explores what would happen if a new character with snake - like abilities emerged in Konoha. It delves into how this character would be treated, how they would interact with Naruto and his friends, and how their powers would develop over time. It's really interesting as it also shows how the village adapts to this new and somewhat strange presence.
There's a fanfiction titled 'Snake Patronus: A Hidden Power'. In this story, the discovery of a snake patronus is not just about the magic but also about the character's journey of self - discovery. The author does a great job of weaving in elements from the original series, like the Forbidden Forest and the Sorting Hat, to make it feel like a true part of the Harry Potter universe. It's a great read if you like exploring different interpretations of the patronus concept.