Another possibility is a crossover with Beauty and the Beast. Belle could visit Arendelle. Elsa and Belle could bond over their differences from the norm in their respective worlds. Elsa could show Belle her ice palace, and Belle could introduce Elsa to the world of books in the Beast's castle, inspiring new ideas for both of them.
A crossover with Moana might be interesting too. Moana could take Elsa and Anna on a journey across the ocean in her boat. Elsa could use her ice powers to create paths or structures on the water. They could face challenges like sea monsters and learn from each other's different ways of life.
One idea could be that Elsa accidentally travels to another Disney world like Aladdin's Agrabah. There, she could use her ice powers in the desert, creating ice sculptures that amaze the locals. Another could be a crossover with The Little Mermaid. Maybe Ariel discovers an iceberg with Elsa trapped inside and helps her get free. They could then explore each other's worlds together.
One idea could be that Jack Frost from 'Rise of the Guardians' visits Arendelle during a particularly harsh winter. He meets Elsa and they both discover that they have a unique connection to winter. Maybe Jack can teach Elsa some new tricks about controlling snow and ice, and in return, Elsa shows Jack how she uses her emotions to create beautiful ice sculptures. They could team up to save Arendelle from an even greater threat, like a dark force that wants to plunge the kingdom into eternal winter.
There could be a fanfiction where Loki, the trickster from the Avengers, ends up in Arendelle and causes chaos. He could manipulate some of the characters or try to steal Elsa's powers for his own gain. And on the other side, the Avengers are searching for him. Meanwhile, the Frozen characters have to deal with Loki's mischief on their own until the Avengers arrive. This would create a lot of interesting scenarios and character interactions.
One interesting idea could be a crossover with "Moana". Elsa's ice powers and Moana's connection to the ocean could create a really cool dynamic. Maybe Elsa accidentally freezes part of Moana's ocean and they have to work together to fix it. Another could be with "Tangled". Rapunzel's long hair and her adventurous spirit combined with Elsa and Anna's journey in Frozen 2 would be exciting. Rapunzel could use her hair to help them climb mountains or cross chasms. A third idea is a crossover with "Beauty and the Beast". Belle's love for books and knowledge could help Elsa understand more about her powers and the history of magic in the Frozen world.
Elsa and Tiana would be a great pairing. Tiana is all about hard work and determination, while Elsa has her own struggles with self - acceptance. They could learn from each other. Tiana could teach Elsa about the value of following your dreams through hard work, and Elsa could show Tiana that it's okay to be different.
Probably Genie from Aladdin. Genie is all about granting wishes and his larger - than - life personality. In a Frozen crossover, he could offer to grant Elsa a wish, like making her ice powers more controllable or finding her a true love in a really over - the - top way. It's not a combination you'd think of right away.
One idea could be that Elsa, with her ice powers, is mistaken for a powerful ice mage in Skyrim. The Dragonborn might seek her out to learn more about controlling ice magic in a different way. Another could be that the Frozen characters end up in Skyrim during a particularly harsh winter and have to adapt to the more dangerous environment. They could encounter bandits or wild animals, and the Skyrim characters could help them survive.
One idea could be a crossover between characters from different Disney Infinity franchises in a post - apocalyptic world. For example, Jack Sparrow from Pirates of the Caribbean and Elsa from Frozen teaming up to find a way to restore their shattered universes. Another idea is to have Buzz Lightyear and Stitch on an intergalactic adventure where they have to stop an evil force that is threatening multiple Disney worlds.
One idea could be that Goku ends up in the world of Aladdin. He might mistake the flying carpet for a new kind of Ki - powered vehicle. And he could use his martial arts skills to help Aladdin fight off Jafar's minions in a really action - packed way.
One idea could be having Maleficent and Ursula team up. Maleficent could use her dark magic to help Ursula get more powerful in the ocean realm. Maybe they plot to take over both the land and the sea. They could start by causing chaos in the kingdoms near the shore, like making storms and scaring the fishermen.