Well, it could be that in the 'harry snaps at the goblet of fire fanfiction', Harry's snap is a moment of great character development. He might have been dealing with a lot of stress, like the pressure from Voldemort's return, and the Goblet's situation just pushes him over the edge. This could then trigger a series of events where he has to face not only the challenges of the tournament but also deal with the fallout from his outburst. His friends might react in different ways, some supporting him wholeheartedly, while others might be a bit more cautious. And this could lead to new alliances and rivalries within the Hogwarts student body.
In this fanfiction, perhaps Harry snaps at the Goblet of Fire because he's tired of being in the spotlight without his consent. The Goblet choosing him for the tournament when he didn't enter could be the last straw. It might lead to him taking more radical actions in the story, such as trying to find out who really put his name in the Goblet, and in the process, uncovering a deeper conspiracy within Hogwarts or the wizarding community at large.
One possible interesting story could be Harry's internal struggle that leads to him snapping at the Goblet of Fire. Maybe he's frustrated with the way the Triwizard Tournament is being handled or he suspects some foul play related to the Goblet's selection. It could also show a different side of Harry's character, like his growing impatience with the magical world's bureaucracy.
One interesting fanfiction could be about an alternate take on Harry's experience in the Triwizard Tournament. Maybe it focuses on his relationships with the other champions in a way that wasn't fully explored in the original book. For example, a deeper bond between Harry and Cedric.
It could be someone who wants to see Harry fail in the Triwizard Tournament. Maybe a Slytherin student who is jealous of Harry's fame. They might have found a way to manipulate the Goblet of Fire to put Harry in a difficult situation, which in turn makes Harry snap.
One unique fanfiction is about a character from a different wizarding school who somehow gets involved with the Goblet of Fire at Hogwarts. This character has their own set of magical abilities and traditions that clash and blend with those of Hogwarts, creating a really engaging story full of cultural exchanges and magical mishaps.
One interesting plot idea could be exploring what would happen if a different student was chosen for the Triwizard Tournament. Maybe a shy and overlooked student gets picked, and they have to overcome not only the tournament tasks but also their own insecurities. Another idea could be a love triangle involving characters that were not part of one in the original story. For example, a friendship between a Hufflepuff and a Slytherin turns into a complex relationship when feelings for Harry Potter get involved.
One interesting plotline could be Daphne and Harry teaming up secretly to investigate the mystery behind the Goblet of Fire. Maybe they suspect some dark magic interference that others haven't noticed yet.
In some fanfictions, a great plotline could be Harry and Luna forming a closer bond because of the Goblet of Fire chaos. Luna could be the one to comfort Harry when he's facing the difficulties and dangers of the tasks. And together, they might even uncover a conspiracy among the teachers or judges that was meant to manipulate the results of the Triwizard Tournament.
One interesting plot twist could be that Harry has an unexpected ally in the Triwizard Tournament. Maybe a Slytherin student who has a hidden agenda but ends up helping Harry in a crucial task. This would change the dynamic of the traditional House rivalries.
One possible interesting plot could be Harry's internal struggle with being forced into the Triwizard Tournament. He might have to deal with the pressure of competing while also trying to figure out who or what is behind this forced entry. Another plot could involve how his relationships with Ron and Hermione change due to this unexpected situation. Maybe Ron becomes jealous at first because Harry gets all the attention, but then they reconcile as they realize it's not Harry's fault.
One interesting plotline could be Draco secretly helping Harry during the Triwizard Tournament. Maybe he has a change of heart and realizes that the dark side isn't what he really wants. Another could be a friendship forming between them in the face of a common enemy within the tournament. For example, a dark wizard who tries to manipulate the tasks for their own evil purposes.
One possible plotline could be a friend betraying Harry to gain favor with the Death Eaters. Maybe they leak information about Harry's tasks in the Triwizard Tournament. This would add a whole new layer of danger and drama to the story.