One idea could be that during a potions class, Harry accidentally mixes the wrong ingredients and creates a potion that makes everyone's voices switch bodies. So Hermione might sound like Ron and vice versa. It would lead to a lot of comical situations as they try to reverse the effect.
In a 'Harry Potter Potions Accident Fanfiction', a possible plot could be that Harry's potions accident results in a potion that makes the Hogwarts castle start to transform into different places from the wizarding world's history. Parts of it become like the ancient castle where the four founders first established Hogwarts, and the students have to navigate through these changes while also trying to find a way to reverse the potion's effects. This would not only be an adventure in terms of exploring the transformed castle but also a journey into the history of Hogwarts.
A great plot point could be that the potions accident results in them being able to read each other's minds. They suddenly have access to each other's deepest thoughts and secrets. This makes them extremely uncomfortable at first, but as they start to understand each other better, they form an unlikely bond. For example, Harry discovers that Draco is under a lot of pressure from his family, and Draco realizes that Harry has his own insecurities despite being the 'Chosen One'.
One idea could be a fanfiction where a character discovers an ancient potion recipe that has been lost for centuries. They then embark on a journey to gather all the rare ingredients and brew it, not knowing what the potion's true effects are.
One idea could be a story where a young wizard discovers a long - lost potion recipe that has a connection to the snitches. Maybe it's a potion that can make the snitches glow in a particular way, leading to a hidden treasure within Hogwarts. Another plot could involve a potion - making competition where the key ingredient is something related to snitches, like the feathers. This would create a lot of drama and rivalry among the students.
One idea could be a story where a character discovers a new potion that can temporarily give the ability to track Snitches like a Seeker. For example, a young student who is not on the Quidditch team but has a great interest in the sport finds this potion and uses it to help their team practice, leading to some unexpected adventures and rivalries.
One interesting pet potion in Harry Potter fanfiction could be a growth potion for magical pets. It might make a small owl grow into a large and majestic one overnight. Another could be a potion that gives pets the ability to speak human languages for a short time, leading to some really funny and heart - warming interactions with their owners.
One interesting Harry Potter potions fanfiction could be one where Hermione discovers a new potion that can temporarily give the drinker the ability to speak Parseltongue. It adds a new layer of mystery and adventure to the story. Another could be a story where Snape's old potions notes are found by a new student, and they start to recreate his unique and often dangerous concoctions.
One possibility is that a potions accident could cause a time - related mishap. Maybe the potion was supposed to be a simple Sleeping Draught but due to the accident, it creates a time - loop. The characters find themselves repeating the same day over and over until they figure out how to reverse the effects of the botched potion. This could be a really interesting plot device in a Harry Potter fanfic as it would allow for a lot of character development and exploration of different choices within the same day.
One idea could be that Miko accidentally creates a love potion that makes everyone in her village fall in love with the wrong people. Chaos ensues as people start acting strangely. Another could be that Miko uses a love potion to try and win the heart of someone she has a crush on, but it backfires and she has to find a way to reverse it.
One interesting plotline could be the potions professor secretly mentoring Harry in advanced potions outside of class, leading to Harry's rapid improvement and discovery of new potions with unique magical properties.
One interesting scenario could be a new student who has an unexpected natural talent for potions, much to Snape's surprise. This student might be able to create complex potions with ease, while others struggle.