A popular one is 'Harry and Myrtle's Secret Encounters'. It shows how Harry, with his curious nature, starts to have these secret meetings with Myrtle. The story is filled with mystery and as the relationship between them unfolds, it also reveals a lot about the secrets of Hogwarts that are connected to Myrtle.
The main reason is that it allows fans to play with the existing characters in a new way. Harry is the hero of the story, and Myrtle is this overlooked ghost. Combining them creates a contrast that can be really appealing. It can also be a form of exploring themes like love that crosses boundaries, whether it's the boundary between life and death or just social differences within the Hogwarts world.
Well, she could make it more difficult at times. Her constant moaning might be a distraction for Harry when he's trying to study or think in the bathroom. But on the other hand, she could also be a source of useful information. For example, if there's something strange going on in the bathroom or nearby, she'd probably be the first to know.
I'm not sure if there is a specific 'good' one. Fanfiction quality can vary greatly. You could try searching on major fanfiction platforms like FanFiction.net or Archive of Our Own, but be aware that lemon (suggestive or sexual content) may not be allowed on all parts of those sites, depending on their rules.
Common themes in Harry Myrtle fanfiction include acceptance. Harry accepts Myrtle for who she is, a lonely ghost, and this forms the basis of their relationship. Growth is also a theme. Both characters may grow and change because of their association. For example, Harry might become more empathetic towards the ghosts in Hogwarts. And then there's the theme of the supernatural. Given Myrtle's ghostly nature, there are often elements of the supernatural in the stories, like how she can move through walls and her connection to the spirit world.
One interesting plot could be Myrtle helping Harry in a way that only she can, like using her knowledge of the castle's secrets. Since she haunts the girls' bathroom, she might know about some hidden passages or magical items there that could assist Harry in his adventures.
The theme of friendship also pops up. Writers might imagine Myrtle forming unlikely friendships, perhaps with Harry or his friends. This could be a really heartwarming aspect as it shows her breaking out of her lonely shell and connecting with others in the wizarding world.
One common theme could be friendship. Despite the odd pairing, they could form an unusual friendship. Maybe Myrtle helps Harry in some way that others can't, like providing insights into Hogwarts' secrets. Another theme might be growth. Harry could help Myrtle move past her sad state and grow as a character.
One common theme is the idea of redemption. Myrtle, as a ghost who has been kind of stuck in her own misery, could find redemption through a relationship with Harry. Another theme is the exploration of the afterlife and how it intersects with the living world. Since Myrtle is dead, the fanfiction might play with the idea of how a relationship between a living person (Harry) and a ghost could work. Also, the theme of acceptance - Harry accepting Myrtle for who she is, despite her flaws and her being a ghost.
I've read a fanfic titled 'Myrtle's Guidance for Harry'. It's really good. In it, Myrtle uses her unique position as a long - time observer of Hogwarts to guide Harry in his struggles against Voldemort. It's a different take on the usual Harry - centric stories and gives Myrtle a more important role. There are also some really cool descriptions of the Hogwarts' hidden passages and chambers that Myrtle shows Harry.