One interesting scenario could be when the characters are in detention and they discover a hidden magical object. For example, in some fanfictions, Harry and his friends might find an old, enchanted diary during detention in the castle. This diary could hold secrets or be a portal to another time or place.
Another scenario could involve a character having detention with a teacher they don't usually interact with much. For instance, Neville having detention with Professor Snape. In this situation, Neville might learn a new spell or potion - making technique from Snape during detention. This can lead to an unexpected bond or at least a newfound respect between the two characters, which can be really fascinating to read about in fanfiction.
In detention fanfictions, there are often scenarios where the characters have to work together to overcome a challenge. Say, they are given the task of cleaning a particularly nasty part of the Forbidden Forest as detention. They end up using their combined magical skills to not only clean it but also to fend off some dangerous creatures that lurk there. It's a great way to show their growth and teamwork outside of the normal classroom setting.
One common detention scenario in Harry Potter fanfic could be having to clean the Forbidden Forest under the watchful eyes of Hagrid. The characters might encounter all sorts of magical creatures they've never seen before, like a rare breed of unicorn or a group of mischievous pixies. Another could be having to sort through a room full of old, cursed items in Filch's office, with the danger of accidentally triggering a curse.
One interesting scenario could be that during detention, Snape makes Harry clean all the potion bottles in the dungeon while lecturing him about the importance of precision in potions. Harry, in turn, discovers an old, forgotten potion recipe among the bottles and Snape is grudgingly impressed.
A common scenario is that Harry is made to scrub cauldrons. Snape would be hovering nearby, making sarcastic remarks about Harry's sloppiness. Another one could be that Harry has to organize Snape's Potions ingredients in alphabetical order while Snape quizzes him on their properties.
Perhaps in the fanfiction, Snape assigns Harry to clean all the old potion vials in the storage room during detention. While doing so, Harry discovers an old diary that seems to hold secrets about Snape's past at Hogwarts, which then leads to a series of revelations and a change in their relationship.
One interesting scenario could be shopping for magical pets in Diagon Alley. In some fanfictions, characters might discover rare and unique creatures that are not typically found in the original books. For example, a magical hybrid of a phoenix and a cat that can both fly and purr.
Well, there are dueling scenarios where characters from different generations meet in a magical duel. For example, a character from Harry's time might accidentally travel back and duel with a student from the Marauders' era. This can lead to some really creative uses of magic as they try to outwit each other with different spells and strategies they've learned in their respective times.
One interesting scenario could be an OC who is a muggle - born wizard but has unique magical abilities not seen in regular wizards. For example, they might be able to communicate with magical creatures in a way that no one else can.
A common boggart scenario in fanfiction is related to the characters' insecurities. For Harry, it could be that the boggart shows him as the cause of all his friends' misfortunes, emphasizing his fear of being a burden or a danger to those he loves. This can add more depth to his character and explore his self - doubts further.
One interesting 'last will' scenario could be a character leaving behind a powerful magical artifact in their will. For example, a wizard might leave a wand with special properties to Harry Potter, which could be a key to defeating a new dark force. This would add an extra layer of mystery and power to the story.
In some Harry Potter hospital fanfictions, there could be a scenario where a student gets injured during a Quidditch match and is rushed to the hospital wing. There, Madam Pomfrey uses her magic to heal the student in a very unique way, like using special potions that are not mentioned in the original books.