Well, in a 'chemistry Harry Potter fanfic', you could have a plot where the Potions class at Hogwarts gets a new teacher who is obsessed with the chemical aspects of potion - making. This teacher makes the students learn about the molecular structure of ingredients. For example, they study how the atoms in mandrake roots interact with the molecules of dittany. It could also be about a student who finds a way to use chemistry to reverse the effects of a dark curse. They figure out that the curse has a certain chemical signature, and by using a combination of magical and chemical knowledge, they create an antidote.
A great idea for a 'chemistry Harry Potter fanfic' would be to explore the idea of magical elements having a periodic table of their own. In this fanfic, a young wizard or witch discovers that the elements used in magic, like phoenix feathers or unicorn hairs, have a hidden chemical - like structure. They start to research and find that different combinations of these 'magical elements' can create new spells or potions. This could lead to a race between the good wizards and the Death Eaters to discover and control these new combinations, with the main character using their knowledge of both magic and the new - found 'chemical' understanding of magic to save the day.
One idea could be a story where Harry discovers a magical potion that has a chemical reaction with the magic in his scar, causing strange and new powers to emerge. Another could be a fanfic where Hermione uses her knowledge of chemistry to analyze the properties of magical substances in a new way, like creating a new type of spell - ink that changes color based on the chemical composition of the air around it. Or perhaps a story about a wizard who was a chemist in the Muggle world before coming to Hogwarts and he tries to combine Muggle chemistry with magic to create unique spells.
There's also 'The Alchemical Harry Potter'. This fanfic delves into the alchemy side which has a lot of chemistry - like elements transformation. It shows how characters in the Harry Potter universe could use alchemical knowledge, which is similar to chemistry, to solve problems or create new magic.
One interesting idea could be a fanfic that focuses on the Marauders' time at Hogwarts. It could explore their pranks, friendships, and how they came to be the legends that we hear about in the original books. For example, showing how they created the Marauder's Map in more detail.
One interesting idea could be a fanfic where the Marauders attend Hogwarts during modern times. They'd have to deal with things like smartphones and social media while still maintaining their mischievous ways. Another could be a story that focuses on the lives of the house - elves after the events of the books, perhaps exploring their newfound freedom. And a third idea could be a fanfic about a new dark wizard emerging in the wizarding world years after Voldemort's defeat, and how the new generation of Hogwarts students respond.
A great 'Harry Potter fanfic' idea might be a story that delves deeper into the relationship between Snape and Lily. Maybe a fanfic where Snape has a chance to change the past and save Lily in a different way. Another idea is to write a fanfic about the ghosts in Hogwarts and their backstories, like how they died and why they chose to stay at the school. Additionally, a story where the Weasley twins open a magical joke shop in a different country and the challenges they face there would be really interesting.
One interesting idea could be exploring the lives of the minor characters more in - depth. For example, what was Neville Longbottom's life like during the summers at home? Another idea is to create an alternate ending to the series. Maybe Voldemort could have been redeemed instead of defeated. Also, a fanfic could focus on the magical creatures and their own society within the wizarding world.
A unique feature is the blend of two different worlds. It combines the fantastical elements of Harry Potter like magic wands and spells with the scientific concepts of chemistry. For instance, potions can be seen as chemical mixtures with specific properties.
One interesting idea could be a crossover with 'Lord of the Rings'. Imagine Harry and his friends in Middle - earth, facing the dark forces there. They could learn new magic from the wizards in Middle - earth or teach their own brand of magic. Another idea is a crossover with 'Percy Jackson'. The demigods and the wizards could team up to fight a common enemy that threatens both the magical and the mythological worlds. Maybe they'd have to combine their powers and strategies.
One idea could be creating a new magical game within the Hogwarts world. For example, a game that combines elements of Quidditch and wizard dueling. The characters could form teams and compete in a tournament where they have to both fly on brooms and use spells against each other. This would add a new and exciting dynamic to the fanfic.
A really interesting concept would be Stiles being a time - traveler in the Harry Potter world. He could go back in time to witness important events in the wizarding world's history and even change some small things that have a big impact on the present in the fanfic's storyline.
One idea could be a crossover where the characters from Harry Potter visit the world of SG1. Maybe Harry and his friends could learn about the Stargates and the different planets. Another idea is a story where the magic from Harry Potter is combined with the technology in SG1, like using spells to enhance the function of some SG1 devices.