Well, perhaps the Island of Fire is a place where ancient magic is stored. Harry discovers that his family has a connection to this place and he has to unlock the secrets within. The island could also be a prison for dark wizards from long ago, and some of them start to break free, causing chaos for Harry and his companions.
In this fanfiction, the Island of Fire might be a place of magical trials. Harry, Ron, and Hermione are sent there to prove their worth as wizards. They face challenges like fire - breathing dragons that guard the entrance to a powerful magical wellspring. If they can pass these trials, they will gain new powers that are crucial in the fight against the dark side.
One plot idea could be that the characters find an island that has been hidden by magic for centuries and it holds secrets about the founders of Hogwarts. Another could be that they are stranded on an island during a magical storm and have to use their skills to survive and also discover a hidden magical creature colony there.
Well, in some fanfiction, the dragon fire might be used to create a new potion ingredient. For example, a young wizard discovers that by collecting the ashes of a dragon's fire when it burns a certain magical plant, it can be used to make a potion that gives temporary invisibility. Also, perhaps a dragon's fire could be used to melt a cursed object that no other magic can affect, leading to a whole new adventure for the characters.
One idea could be that the characters from Harry Potter are magically transported to Total Drama Island. Harry could use his magic skills to outwit the challenges there. For example, he might use a levitation charm to get through an obstacle course. Another plot could involve Hermione using her vast knowledge to strategize for the various challenges on the island. And Ron could provide some comic relief while also being a loyal teammate.
One idea could be that the OC is a foreign exchange student who has unique magical abilities unknown to Hogwarts. They could help Harry in the Triwizard Tournament tasks in unexpected ways, like using ancient spells from their home country.
One idea could be that Harry has a group of friends from different houses who are all secretly in love with him. They start to form a sort of harem around him during the Triwizard Tournament. For example, Hermione could be using her intelligence to help him in the tournament in a more personal way, and Cho Chang might be more openly affectionate, and then there could be a girl from Beauxbatons who is also drawn to Harry's bravery.
A cool plot could involve a crossover with 'Star Wars'. Picture Harry using the Force in addition to his magic while competing in the Triwizard Tournament. Or perhaps a crossover with 'Alice in Wonderland' where the Goblet of Fire sends Harry down the rabbit hole and he has to navigate Wonderland's strange rules during the tournament.
One idea could be a crossover where a character from Harry Potter accidentally travels to the world of Wings of Fire. Maybe Harry himself ends up in the dragon - filled world and has to figure out how to get back while also dealing with the unique challenges there, like avoiding being eaten by a big dragon or getting involved in the dragon politics.
Well, in some 'fire and ice harry potter fanfiction', there could be the idea of a magical duel where one wizard uses fire - based spells and the other ice - based spells. It creates a really cool visual and a new kind of magical combat style not often seen in the original books.
One idea could be exploring what would happen if a different student was chosen by the Goblet of Fire. Maybe a Muggle - born student who has to face extra prejudice during the Triwizard Tournament. It would add a new layer of conflict and show how the wizarding world reacts to a 'less likely' champion.
One idea could be introducing a new character from another universe who accidentally gets transported into the Goblet of Fire timeline. This character could have unique magical abilities that both fascinate and worry the Hogwarts students. For example, they might be able to control time in a different way than Hermione's time - turner. Another plot idea could be that Voldemort discovers a new dark magic spell from this other universe through a mysterious object. This could make him even more powerful and the trio has to find a way to stop him using knowledge from both universes. Also, what if the Goblet of Fire chooses a student from a completely different magical school in this crossover? It would create a whole new dynamic of competition and friendship.