Well, there is a fanfiction called 'Elijah: The Unseen Years'. This story explores the parts of Elijah's life that we don't see in the show. It might show his travels, his encounters with other vampires or supernatural beings during those times. And also, 'Elijah and the New Alliance' is quite interesting. It's about Elijah forming an unexpected alliance with some of the characters in the series to face a common threat.
A very popular Elijah Vampire Diaries fanfiction is 'Elijah's True Purpose'. In this story, the author digs deep into what Elijah really wants in life. Is it power? Or is it something more profound like peace or redemption? It shows his journey to find that purpose. There are also fanfictions that focus on his relationship with Elena in a different light than the show, like 'Elijah and Elena: An Alternate Bond' where their connection is more of a mutual understanding and respect rather than the usual power play in the series.
One interesting fanfiction could be about Elijah trying to redeem Katherine. Maybe he sees a side of her that others don't, and he attempts to guide her towards a more positive path. It could involve them traveling together and facing various challenges from the vampire world.
One great 'The Vampire Diaries Elijah OC fanfiction' is 'The Lost Soul'. It has an interesting plot where the OC has a unique connection with Elijah that defies the norms of the vampire world in Mystic Falls. The character development of the OC is well - done, and it adds a new layer to the already complex world of the show.
One interesting storyline could be Elijah protecting Elena from other powerful vampires. Since Elijah has a sense of honor, he might see it as his duty to keep her safe.
A fanfiction could explore the idea that Elijah's desire for Elena is part of a bigger prophecy. Maybe there's a hidden message that says if Elijah and Elena are together, it will bring peace to the vampire and human world. So he's driven by this sense of duty as well as his personal feelings for her. This would lead to a lot of internal conflict for Elijah as he tries to balance his feelings with the potential consequences of their relationship.
One idea could be that Elijah tries to court Elena in a very old - fashioned and gentlemanly way. He might take her on trips to historical places he has known over the centuries, sharing his stories and knowledge with her. This would be a contrast to the other vampires' more aggressive approaches towards Elena.
One common theme is rivalry turned friendship. They start off as enemies but over time, in many fanfics, they learn to respect and even rely on each other.
There's a fanfic called 'Elijah's Redemption through Damon'. This one dives deep into Elijah's character development with Damon as an unexpected catalyst. It shows a different side of their relationship, more of a mentor - mentee kind of bond at times.
One interesting storyline could be Elijah protecting Elena from a new and powerful enemy in Mystic Falls. Maybe an ancient vampire who has a vendetta against the doppelganger. He could use his centuries - old knowledge and skills to keep her safe while also trying to understand his growing feelings for her.
Some popular fanfiction platforms like Archive of Our Own have search filters. You can search for Vampire Diaries, Elijah and Katherine - related fanfictions and then check out the authors of the stories that you like the most. They are likely to be good writers in this area. For example, if a story has a really engaging plot and well - developed characters, chances are the writer is skilled at writing about these two characters.
One common antagonist could be Klaus. He has his own motives and often clashes with Elijah. His presence can create a lot of tension between Elijah and Elena as well, since he might target Elena to get to Elijah or vice versa.