Yes, there are some really interesting ones. You can often find them on fanfiction websites. Some might combine the magical elements of Harry Potter with the drama and action of Chicago Fire. For example, a story could have a wizard or witch end up in the world of Chicago Fire and use their magic to help in the firefighting or deal with some mysterious incidents related to the fires.
A crossover could involve a character from Chicago Fire having a personal connection to a case the Chicago PD is working on. Maybe a firefighter's family member is wrongly accused of a crime. The firefighter then teams up with the PD detectives to clear their family member's name. This would bring in elements of loyalty, family, and the different skills of both groups. They could share information and resources to solve the mystery.
A fanfiction might focus on Peter Mills' relationships at the firehouse. For example, his friendships with the other firefighters. He could get into an argument with one of them over a difference in approach to a job, but then they work it out and their bond becomes even stronger.
Well, it might be that the Goblet of Fire has been corrupted in the fanfiction. It could be causing chaos in the Triwizard Tournament, endangering the lives of the students more than it should. Harry, being the hero, takes it upon himself to destroy it to restore order. For example, if it starts spawning dangerous and unfair tasks that are clearly not part of the original tournament's design.
There could be. 'Harry Potter' has a huge fan base and they like to explore different concepts. Fire elementals could be added to the story in many ways, for example, as a new kind of magical creature or as a power that a character discovers. However, not all fanfictions are easy to find. You might need to search through different platforms dedicated to 'Harry Potter' fan works.
In fanfiction, the possibilities are endless. Harry Potter being a fire mage could be part of a unique take on the story. It could change his role in battles, his relationships with other characters, and the overall plot. For example, as a fire mage, he might have a special connection with certain magical creatures that are associated with fire, or he could develop new spells and techniques related to fire magic that are not in the original books.
Well, in such a fanfiction, Harry could have found a magical fire - producing object that gives him the ability to fight the dragon with fire. He might have to learn how to handle this new power quickly while in the heat of the battle. The dragon, on the other hand, would use its natural abilities like flying and breathing fire in return. It would be a battle of wits and power.
It could be a very creative and metaphorical concept within the fanfiction. Maybe it represents the urgency or the consuming nature of time in the context of the Harry Potter universe, like how time can 'burn' through opportunities or events in the story.