In the fanfiction, perhaps Elladan and Elrohir would be intrigued by the Dwarves' craftsmanship. The Dwarves, in turn, might be impressed by the Elves' grace and magic. They could end up sharing stories around a campfire, forging an unlikely friendship.
Well, it could start with a bit of tension. The Elves' refined ways might seem strange to the Dwarves, and the Dwarves' rough - and - tumble nature could be off - putting to the Elves. However, as they face challenges together, like a group of orcs attacking, they would come to respect each other. Elladan and Elrohir could learn about the Dwarves' loyalty to their clans, and the Dwarves could see the Elves' deep connection to nature.
They could start with a formal greeting. Given the history between Elves and Dwarves, they would be polite but reserved.
One common theme is friendship. Since the original characters (OCs) are often inserted into the world with Elladan and Elrohir, the development of friendship between them is a big part. For example, the OC might start as a stranger and gradually become a trusted ally.
One interesting story could be about their early adventures in the forest near Rivendell. Maybe they discover a hidden glade filled with magical creatures. Another could be about their first attempts at learning elvish archery from their father, Elrond.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). There are often many Tolkien - related fanfictions there, and you can specifically search for ones about Elladan and Elrohir as babies. Another place could be some Tolkien - focused forums, where fans might share their own written works or recommend good fanfictions.
Another interesting one is 'Among the Elves: Elladan, Elrohir and OC'. This story dives deep into the elven culture and how the OC adapts to it while being in the company of Elladan and Elrohir. It shows their daily lives, their training, and how they interact with other elves. The descriptions of the elven settings are really vivid, making you feel like you're right there in Middle - earth.
In such a fanfiction, perhaps the dwarves might try to use Legolas as a bargaining chip. They could be after some elvish treasure or secrets. Maybe they want to exchange him for some powerful elvish weapon.
The fact that it allows for a new perspective. With an original character, we can explore aspects of Elrohir's life and world that might not be covered in the original works. For example, an OC could be from a different culture or have a unique ability that leads to new adventures and interactions with Elrohir.
In an 'Avengers meet Hela' fanfiction, there could be an epic battle. The Avengers, with their diverse powers, would face off against Hela, the powerful Asgardian goddess. Iron Man might use his high - tech suits to try and fend off her attacks, while Thor could be conflicted, as she is related to him. Captain America would lead the team with his strategic mind, and they might eventually find a way to either defeat Hela or come to some sort of truce.
In an 'Avengers meet Mobius' fanfiction, they could team up. Mobius might use his understanding of different timelines to help the Avengers prevent a major catastrophe that involves multiple universes. They could combine their powers and skills. Iron Man could work with Mobius to create new technology based on multiverse concepts.
In an 'Avengers meet Robin' fanfiction, it might start with Robin somehow ending up in the Avengers' world. He could be a bit of an outsider, but his courage and quick thinking would soon earn their respect. The Avengers could offer to train Robin in new ways, and in return, Robin could offer his street - smart knowledge. They might go on a joint mission where Robin's ability to blend in unnoticed becomes a huge asset.