What are some interesting plot ideas for Buffy Bones crossover fanfiction?

One idea could be that Buffy and her friends are called to New Orleans because of some strange vampire activity that seems linked to the Originals. Maybe the First Evil from Buffy's world has some connection to an ancient threat in the Originals' world, and they have to team up to stop it.

One idea could be that the Charmed Ones and Buffy team up to fight a powerful demon that has the ability to move between their two worlds. They have to combine their unique magical powers and slaying skills to defeat it.

Well, there could be a story where a powerful dark magic object from the wizarding world is brought to Sunnydale. Buffy discovers it and realizes it has the power to disrupt the balance between good and evil in her world. She then travels to Hogwarts to seek help from Harry Potter. Along the way, she meets various magical creatures and has to navigate the wizarding world's politics. Once she meets Harry, they discover that there is a common enemy behind all this, someone who wants to use the chaos in both worlds for their own gain, and they must work together to stop this mastermind.

Well, perhaps there's a spell in the wizarding world that accidentally opens a portal to Sunnydale. Buffy stumbles through and finds herself in Hogwarts. The Hogwarts students are initially confused by her, but when they see her fighting skills against the dark arts, they start to work together. Harry could learn a lot from Buffy about facing the unknown fearlessly, and Buffy could gain knowledge about magic from the wizards.

One idea could be that Buffy and her friends are transported to the wizarding world. Buffy could use her slaying skills to fight dark creatures in Hogwarts like Dementors or werewolves. Maybe she teams up with Harry and they teach each other their unique fighting styles.

One idea could be that Buffy is transported to the wizarding world. She could use her slayer skills to fight dark wizards. Maybe she teams up with Harry Potter to take on a new kind of threat that combines the powers of vampires and dark magic.

Maybe there's a case where the Bones team discovers a body that has a connection to an old family in Sleepy Hollow. The family has a long - held secret that involves a pact with a dark force. Crane and the Bones team must work together to uncover the truth. The team might initially be skeptical of Crane's tales of the supernatural, but as they dig deeper, they start to realize that there might be more to it. Brennan could analyze the bones in ways Crane never thought possible, while Crane could provide historical and supernatural context that helps the team understand the bigger picture.

One idea could be that Buffy and the Scooby Gang find themselves in Forks and have to deal with the vampire situation there. They might initially clash with the Cullens due to different ways of handling vampires. Another could be a love triangle between Buffy, Edward, and Angel. It would add a new layer of complexity to the relationships already present in both series.

Here's an idea. Buffy and Xander end up in Lothlórien. The elves are initially suspicious but then realize they are there to help. Buffy could use her agility and strength to assist in defending the forest. In another scenario, the Nazgûl could cross over to Buffy's Sunnydale. This would be a huge threat, and Buffy would have to use her knowledge of fighting demons along with the help of her friends and the weapons of Middle - earth (if they can get them) to defeat these powerful enemies.

One idea could be that Buffy and the Highlander team up to fight a common supernatural enemy that is causing chaos in both their worlds. Maybe a powerful demon that can't be killed easily, and the Highlander's immortality and Buffy's slayer skills are needed to defeat it.