Well, some stories in this fanfiction might focus on the physical transformation process itself. How does it feel to change from a human to a snake? Is it painful? Swift? Also, there could be a connection to ancient magic or forgotten spells. Maybe the transformation is part of a prophecy or a long - lost magical heritage that the character is only now beginning to uncover.
One interesting idea could be exploring the psychological changes that come with the snake transformation. For example, how the character might start to view the world from a more instinctual and predatory perspective. Another idea could be the impact on relationships. Maybe friends are now seen as either threats or potential prey, which would add a lot of drama to the story.
Another idea could be related to the magical world's reaction to such an unusual relationship. The fanfiction might depict how other wizards and witches view Harry's connection with the snake. Some might be intrigued, while others could be suspicious or even hostile, adding an interesting layer of conflict to the story.
Perhaps in the fanfic, the snake is a key to unlocking an ancient magic that has been lost in the wizarding world. This could lead to a whole new adventure for Harry and his friends as they try to understand and use this magic.
Perhaps the snake summoner is a descendant of an ancient wizarding family with a connection to snakes. Their ability draws the attention of Voldemort, who tries to recruit them. But the summoner resists and instead uses their snakes to gather intelligence on the Death Eaters and help the Order of the Phoenix. They could send snakes into Death Eater meetings to eavesdrop and relay the information back.
Perhaps the snake is a transformed wizard who was cursed. This would lead to a plot where Harry has to find a way to break the curse. He might have to go on a quest to find rare ingredients for a potion. Along the way, he and the snake face various challenges, like dark wizards trying to stop them, and they form a strong friendship through their shared experiences.
Some fanfictions focus on the snake as a misunderstood creature. In this type of story, the snake is constantly misjudged by the wizarding world. Harry, being the empathetic character he is, befriends the snake and discovers that it has a heart of gold. They then go on adventures together, with the snake using its unique abilities like slithering into small spaces to retrieve magical items for Harry.
One possible reason could be a dark spell cast on him by a powerful dark wizard. Maybe Voldemort's followers found a new and strange magic to use against Harry. Another reason might be related to some ancient magic that Harry accidentally triggers. For example, he might stumble upon an old, forgotten ritual site and unknowingly activate it, which results in his transformation.
Another cool transformation idea is the transformation of inanimate objects into living things. Like a broomstick that transforms into a magical creature. This would completely change the dynamics in a story. It could be used for comical effect if the broomstick - now a creature - has a sassy personality and causes chaos in Hogwarts. Or it could be a serious plot point if it was part of a dark magic experiment gone wrong.
One interesting concept is the transformation of characters' appearances. For example, Hermione might be magically transformed into a different species, like a mermaid. This could lead to new adventures and challenges for her as she has to adapt to a completely different form. Another concept could be the transformation of a character's personality. Maybe Harry could be magically altered to be more outgoing or less impulsive, which would change the way he interacts with his friends and enemies.
One interesting idea in 'Harry Potter' fanfiction is the concept of alternate universes. For example, a fanfic might explore what would happen if Harry was sorted into Slytherin instead of Gryffindor. This could lead to a completely different set of relationships and storylines. Another idea could be time - travel fanfics where characters go back in time to change certain events in the wizarding world's history. It adds a whole new layer of complexity and intrigue to the original story.
Another interesting idea is a fanfic where a group of students start a club dedicated to the study of snakes in Hogwarts. They go on quests to find rare snake species in different parts of the wizarding world and learn about their unique magical abilities. Along the way, they face challenges and make new friends, all while respecting the snakes and the magic associated with them.