One idea could be that Hogwarts is magically transported to Skyrim. The students have to deal with the cold, the dragons, and the different magic systems. Another could be that Harry and his friends are sent on a quest in Skyrim to find a powerful magical artifact that could help defeat Voldemort. Maybe they have to team up with the Nords and learn their ways of fighting and magic.
A really cool plot could be that the Death Eaters somehow manage to get hold of some Skyrim magic. They start using it to cause chaos in both worlds. Harry and his friends then have to travel to Skyrim to find a way to stop them. Along the way, they meet various characters in Skyrim, like the Companions who could teach them new combat skills. And they might also discover ancient spells in Skyrim that could give them an edge against the Death Eaters.
Well, perhaps a group of Skyrim mages discover a portal to the wizarding world of Harry Potter. They enter and are amazed by the different types of magic. They could then get involved in the fight against Voldemort, using their unique skills like shouts and their knowledge of Nordic magic. Or, Harry could accidentally end up in Skyrim and has to find his way back home while also getting caught up in the local politics and dragon troubles.
Maybe Harry gets involved in the civil war in Skyrim. He could use his Hogwarts-taught dueling skills to fight in battles, and his knowledge of magic could be used to solve some of the political intrigues. He might also try to find a way to bring peace to Skyrim using his unique perspective on magic.
One idea could be Harry Potter arriving in Skyrim and using his magic to combat the dragons. Maybe he teams up with the local mages and they learn from each other's magical techniques.
One idea could be that the Dragonborn from Skyrim somehow gets transported to the post - apocalyptic world of Fallout 4. Maybe they have to deal with the new threats like the raiders and mutants using their dragon - slaying skills. Another plot could involve the Sole Survivor from Fallout 4 finding a way into Skyrim and getting caught up in the civil war there, having to choose a side while also trying to find a way back home. Or perhaps a magical artifact from Skyrim ends up in Fallout 4 and causes all kinds of chaos as different factions fight over it.
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.
One idea could be a character from Fallout finding themselves in Skyrim. Maybe they bring their advanced weaponry, like a laser pistol, into Skyrim's medieval - like world. This would cause quite a stir among the locals, who have never seen such technology. The character could then get involved in Skyrim's political intrigue, using their unique skills to help or hinder different factions. Another plot could involve a Skyrim mage traveling to the Fallout wasteland. They would be amazed by the strange, post - apocalyptic magic (technology) there and try to learn about it, while also using their own magic to survive against the mutated creatures.
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.
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.
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.