One possible fanfiction could be Danny Phantom going on a field trip to Gotham City where he accidentally stumbles upon the Bat family during one of their crime - fighting escapades. Maybe he uses his ghost powers to help them out in a tricky situation, and they are initially suspicious but then become intrigued by his abilities.
During the field trip, if there's a supernatural event, Danny's powers would be useful. The Bat family, with their detective skills, would notice Danny's unique abilities. They could start working together, like Danny using his ghost ray to stun enemies while the Bat family takes them down physically. Danny might also share some of his knowledge about the ghost zone with the Bat family, which could help them in future cases involving the supernatural.
One great Danny Phantom field trip fanfiction is 'The Haunted Museum Field Trip'. It has a really interesting plot where Danny and his classmates go on a field trip to a spooky museum. Another good one is 'Field Trip to the Ghost Zone'. It takes the concept of a field trip and twists it into an adventure in the Ghost Zone. There are also some on fanfiction.net that are worth checking out.
There is definitely some out there. One type of fanfiction could be about a member of the Bat Family encountering Danny Phantom and being both intrigued and cautious. For example, Batman might initially be suspicious of Danny's powers but then come to realize they could be used for good in his fight against crime in Gotham. Another aspect could be how Danny's friends from his own series interact with the Bat Family members.
The fanfiction where Danny's class goes on a field trip to a floating island in the sky that's full of ancient ghostly artifacts is quite creative. The author creates a whole new world up there with its own rules and mysteries. Also, there's a story where the field trip is to a place that can make people's worst nightmares come true. Danny has to use his ghost powers in new and unexpected ways to protect his classmates. It's very creative in how it plays with fear and the power of the mind.
There could be a group of ghost students from a different part of the Ghost Zone. They might have different abilities and cultures compared to the ghosts Danny usually encounters. This could lead to some interesting interactions and misunderstandings between them and Danny's class.
One idea could be that during the field trip, Danny discovers a new type of ghost that has powers he's never seen before. This ghost could be friendly at first but then turn out to have a hidden agenda that endangers the whole class.
Danny himself is an obvious choice. His journey through different realities can bring out so many different aspects of his character. He can face new challenges that test his limits as a half - ghost. Sam and Tucker are also great characters to focus on. They can provide support to Danny in different ways in each reality. Jazz could also be interesting as she might have different relationships with Danny in different realities. And then there are the ghosts like Vlad who could have different motives and actions in alternate realities.
A powerful ghost that has a grudge against Danny and decides to target him during the class trip. This ghost could be an old enemy who has found a way to become stronger and is now seeking revenge. For instance, it could be a ghost that Danny once defeated but managed to come back with new powers.