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.
A possible plot for a Skyrim and Frozen crossover fanfiction could involve a portal opening between the two worlds. The characters from Frozen are curious and enter Skyrim. Elsa might be interested in the ancient ice magic that exists there. Meanwhile, the Dragonborn could be intrigued by Elsa's unique ice - making abilities. The story could also include how the people of Skyrim react to the more 'innocent' and 'cheerful' characters from Frozen, compared to their own rather rough - and - tumble world.
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.
I think pairing the Dragonborn with Elsa would be very interesting. The Dragonborn has all these combat skills and knowledge of magic, while Elsa has her powerful and sometimes uncontrollable ice magic. Their interactions could range from the Dragonborn trying to help Elsa better control her powers to them teaming up against a common enemy, like a powerful ice - themed demon that is drawn to their combined ice magic.
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.
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 Percy Jackson finds himself magically transported to Skyrim. He could use his water - bending abilities in the frozen landscapes, perhaps to help deal with frost trolls by using water to freeze their legs or something. Another plot could involve Annabeth Chase coming to Skyrim and using her strategic mind to navigate the political intrigues of the different holds. And maybe a demigod from PJO teams up with a Dragonborn in Skyrim to fight a common enemy like an ancient evil that threatens both their worlds.
One idea could be that the Master Chief is somehow transported to Skyrim. He might use his advanced combat skills and technology to deal with the dragons. For example, his energy shields could protect him from dragon fire. Another plot could involve the races in Skyrim getting access to Halo's weaponry and having to figure out how to use it. Maybe the Dwemer could reverse - engineer Covenant weapons.
Well, perhaps Eragon's dragon, Saphira, is injured and they have to seek out the healing magic in Skyrim. Along the way, they meet the Dragonborn. The two dragon - related characters could either become friends or rivals. Eragon might be amazed at the variety of dragons in Skyrim, some of which are different from the ones he knows. And he could share his knowledge of dragon - riding with the Dragonborn.
One idea could be that the Dragonborn is somehow transported to the RWBY world. They could use their shouts to combat the Grimm. For example, 'Fus Ro Dah' could send Grimm flying back, and the local Huntsmen and Huntresses are both amazed and a bit wary of this new power.
One idea could be a Hobbit finding their way into Skyrim. Maybe they get mistaken for a child at first due to their small stature. They could bring their Hobbit - like skills of stealth and a love for food. For example, they might start a small cooking business in one of Skyrim's towns, using unique Hobbit recipes and ingredients they manage to find in Skyrim. This could attract all kinds of characters, from the local Nords to the wandering adventurers.