Perhaps there could be a crossover where some Jurassic World scientists discover a magical portal that leads to the Harry Potter universe. They enter it and are amazed by the magic, and the wizards are equally amazed by the dinosaurs. Then they have to work together to solve a problem that threatens both worlds, like a powerful spell that's making the dinosaurs go berserk.
One idea could be that Hogwarts students take a field trip to Jurassic World. The wizards and witches might be fascinated by the dinosaurs, but then things go wrong when a dark wizard tries to use magic to control the dinosaurs for evil purposes.
Another idea is that a character from Harry Potter, like Hagrid, somehow gets transported to Jurassic World. He would be in his element among the strange creatures, but he also has to use his magic skills to survive and find a way back home while dealing with the chaos that often ensues in Jurassic World.
One idea could be that the dinosaurs in Jurassic World start to exhibit some strange behavior that can only be explained by magic. So, a team of wizards from Harry Potter world, including Harry and Ron, are called in to investigate. They discover that an ancient spell has been accidentally activated that is affecting the dinosaurs' minds. They then have to work together to reverse the spell and save the dinosaurs and the park.
Well, a jurassic world crossover fanfiction might involve crossing it with 'Doctor Who'. The Doctor could land in the Jurassic World and have to figure out how to stop a time - related disaster involving the dinosaurs. Or a crossover with 'Lord of the Rings', with the hobbits and other characters encountering dinosaurs in Middle - earth. A crossover with 'Supernatural' could also be cool, where Sam and Dean hunt down a demon that's using dinosaurs as its minions.
One idea could be that Hogwarts is transported to the Jurassic Park island. The students and professors have to use magic to survive against the dinosaurs. For example, Hermione could use spells to create barriers to keep the T - Rex at bay while the other students try to find a way to get back to their normal location.
Another interesting concept is a time - travel fanfic. A character somehow gets sent back in time to the pre - historic era where the dinosaurs actually lived. They have to survive in that world and try to find a way back, while also witnessing the true nature of the dinosaurs without the modern - day park's infrastructure.
One idea could be creating a new hybrid dinosaur that has unique abilities, like the ability to camouflage itself. Another idea is to write about a group of dinosaurs that have formed an alliance to survive in the park. Maybe a T - rex and a triceratops working together against the humans who want to control them.
One idea could be exploring what would happen if the dinosaurs developed a form of communication with humans. For example, a velociraptor that tries to warn the park workers about a hidden danger in the park.
One idea could be exploring what would happen if Harry Potter used his magic to create a parallel Hogwarts where students from different magical cultures around the world come together. This could lead to new friendships, rivalries, and the discovery of new spells and magical abilities unique to each culture.
A possible plot for this fanfiction could be traveling through the different dimensions of the Harry Potter universe. There might be a dimension where Voldemort won, and seeing the desolate and dark state of the wizarding world there. Another aspect could be traveling with a group of friends to explore the magical ley lines of the world. These ley lines could be the source of powerful magic and hold secrets waiting to be uncovered. And, a journey to the magical libraries around the world, like the restricted section of the Hogwarts library on a grand scale, seeking rare and dangerous books of magic.
One idea could be being reborn as a muggle - born wizard who has a unique ability to communicate with magical creatures in ways others can't. This could lead to all sorts of adventures in the Forbidden Forest and uncovering secrets about the creatures that help in the fight against Voldemort.
One idea could be that Harry discovers a new and ancient magic that is the key to defeating a previously unknown dark force. For example, he might find a hidden spell in a long - forgotten book in the Room of Requirement.