Since I'm not aware of any actual 'female Bilbo threesome fanfiction', it's hard to say. But generally in fanfiction, common elements could include exploring relationships between the characters, character development, and perhaps some unique takes on the world in which Bilbo exists. However, this is all speculation as the existence of such a specific type of fanfiction is uncertain.
I haven't come across any 'female Bilbo threesome fanfiction' myself. Fanfiction is a vast and diverse world, and while there are a lot of creative and interesting stories out there, this particular concept might be quite niche or not conform to the general themes that most Bilbo - related fanfiction explores. You could check some specialized fanfiction communities, but don't be too disappointed if you don't find it.
One common theme could be friendship. Given their characters in the original lore, exploring how a female Bilbo and Dwalin form a unique bond can be an interesting theme. It might involve them overcoming challenges together, like in the original adventures but with a different dynamic.
One common theme is empowerment. Female Bilbo is often shown as a strong, independent character who can hold her own in a male - dominated world like Middle - earth. For example, she might be the one to come up with clever solutions to problems that the dwarves can't figure out.
Possible themes could be quite diverse. There could be a theme of self - discovery. Each character might learn more about themselves through this unique relationship. It might also have a theme of power dynamics. For example, who has more influence in the threesome relationship? Additionally, themes of love and friendship could be intertwined. They might have to figure out how their existing relationships of friendship or love are affected and transformed in this new situation. And there could be a theme of secrecy or openness, depending on how they choose to handle this relationship within their world.
One of the main themes is the power of friendship and how it can turn into something more. In 'female Bilbo and Thorin fanfiction', you'll often see their initial bond of comradeship evolving. Also, themes of self - discovery are common. A female Bilbo may discover new aspects of herself in relation to Thorin and the challenges they face together. And there's often a theme of breaking gender norms as Bilbo, being female, challenges the traditional male - dominated world of the dwarves.
One common theme is the exploration of an alternate relationship dynamic. Since Bilbo is usually male in the original, making Bilbo female changes the power balance and emotional exchanges. Another theme is adventure. Just like in the original story, there are often quests and challenges that the characters face together. And of course, there can be a theme of love and attraction. How these two very different characters from different races develop feelings for each other can be a central focus.
A lot of these fanfictions explore the idea of how a female Bilbo would change the dynamics of her relationship with Kili. There could be themes of female empowerment, where the female Bilbo is shown to be just as brave, if not braver, than her male counterpart. Also, cultural differences between the hobbit and the dwarf are often explored, as they come from different backgrounds in Middle - earth.
One common theme is the exploration of gender roles. Since Bilbo is male in the original, making her female in fanfiction allows for a new look at how she would handle situations in a world with traditional gender expectations. For example, how a female Bilbo would be treated by male dwarves during their journey.
One common theme is the exploration of an unlikely relationship. Since Bilbo is usually male in the original, making Bilbo female changes the dynamic, and fanfictions often explore how they overcome differences. Another theme is adventure. They are in Middle - earth, so they go on quests and face perils together, which strengthens their bond.
Common elements include a sense of unease from the start. Say, three people enter a place that just gives off a bad vibe. There's often a disruption of the normal order, like time seems to behave strangely. And there could be a connection between the three characters that the horror exploits. For instance, if they have a shared secret, the horror might use that to terrify them even more. Also, there's usually a moment when they realize they're in over their heads and there's no easy way out.