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 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.
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.
In Harry Potter fanfic, boggart scenarios can be really creative. Consider a boggart that reflects a character's fear of failure. For example, Draco's boggart could be him failing to uphold his family's reputation. This would play into his insecurities. Then there could be a boggart that is related to a character's secret desires. Maybe Cho's boggart is Cedric coming back but not loving her anymore, which ties into her unresolved feelings about him. And for Seamus, his boggart might be not being able to perform magic at all, which is a fundamental part of his identity as a wizard.
In 'harry potter shopping fanfic', there might be a situation where the characters go shopping for school supplies in a more mysterious part of Diagon Alley. They could discover a new shop that sells enchanted quills that write on their own, depending on what the user is thinking. And then there could be a hunt for the perfect spell - books, especially ones that are not on the regular Hogwarts curriculum. It would add a sense of adventure to their shopping spree.
One interesting scenario could be Harry attending a wizarding ball in a dress. It would be a shock to his friends like Ron and Hermione. He might get strange looks at first, but then his confidence could win people over.
Another scenario could be a secret potion - making competition during the house party. Each house tries to create the most unique and useful potion using their own house's characteristics. For example, the Hufflepuffs might focus on a potion that promotes harmony and friendship among the party - goers.
One interesting scenario could be a battle where a character is severely injured (bloody) but still refuses to give in (unbowed). For example, Neville Longbottom facing a group of Death Eaters alone in a fanfic. He might be bloodied from their curses but stands his ground, showing his Gryffindor courage.
One interesting scenario could be when the tickle spell is used during a friendly duel among students at Hogwarts. Instead of harmful spells, they use the tickle spell to make their opponents laugh uncontrollably. It adds a fun and light - hearted aspect to the duel.
One interesting scenario could be Harry using the staff to perform unique spells that are different from his usual wand magic. For example, he might be able to create large-scale protective shields with a single wave of the staff.