Well, a plot could involve a magical pregnancy. Bonnie's pregnancy might be the result of some ancient magic that she accidentally unleashed. Stefan, being the loving partner, tries to understand this new situation. They could seek help from other supernatural beings, like Caroline, who might offer her support in different ways, such as helping with the pregnancy cravings or protecting them from potential enemies.
One idea could be that Bonnie discovers she's pregnant during a time of great turmoil in the supernatural world. She and Stefan then have to figure out how to protect their unborn child from all the threats. Maybe they go into hiding, and along the way, they face challenges that test their relationship and their will to survive.
One idea could be that Bonnie discovers she's pregnant during a time of great chaos in the magical world. She has to keep it a secret while trying to protect herself and her unborn child from dark forces. Another could be a story where the father of the baby is a mystery, and Bonnie goes on a journey to figure it out all while dealing with the physical and emotional changes of pregnancy.
One idea could be exploring how the other characters in the FNAF universe react to Bonnie's pregnancy. They might be confused, excited, or worried. Another could be the challenges Bonnie faces during the pregnancy, like dealing with her animatronic body limitations.
One idea could be that they struggle with how to tell their friends and family. Since their relationship has had so many twists and turns, they're worried about the reactions. Another could be that they face some kind of supernatural threat to the pregnancy, which adds a lot of drama and action to the story.
Perhaps the fanfiction could explore the challenges they face due to their different natures. Elijah being a vampire and Bonnie being a witch. There could be concerns about the health of the baby, with Bonnie using her magic to ensure a safe pregnancy and Elijah struggling with his vampiric instincts, like the urge to drink blood while being around his pregnant partner.
Well, they could start a new life away from all the chaos. They find a peaceful place where no one knows them and try to raise their baby in secrecy. But then, their past catches up with them. Maybe an old enemy of Kol's discovers their location. Another angle is that the baby has some unique powers even before birth, and this attracts the attention of both good and bad elements in the supernatural world. Bonnie and Kol then have to figure out how to handle this situation without putting their baby in danger.
In a fanfiction plot, Bonnie being pregnant could lead to a story where she forms an unexpected alliance. For instance, she might team up with a heretofore enemy because they have some knowledge about how to keep the baby safe during her pregnancy. Also, the pregnancy could be a sign of a prophecy in the Vampire Diaries universe. This could set Bonnie on a journey to figure out what the prophecy means for her baby and the future of Mystic Falls.
Their friends' reactions would be a mixed bag. Some, like Matt, who is more on the human side of things, would be in awe of this supernatural pregnancy. He'd try to understand it from a human perspective and offer practical help like getting baby supplies from the human world. Meanwhile, the other supernatural friends would have different reactions based on their own agendas. For example, some witches might see Bonnie's pregnancy as a powerful event and either try to use it to their advantage or protect it out of a sense of duty to the witch community. Overall, their friends' reactions would add a lot of drama and support to the fanfiction story.
Another plot could be them starting a new business in Mystic Falls. They have to deal with the local politics and the jealousy of some of the townspeople who are still not used to their relationship. This would create a lot of drama and also show how they support each other through tough times.
One plot idea could be Stefan and Vladimir teaming up to face a new threat in the Twilight universe that is even more powerful than the Volturi. They could use their combined knowledge and skills to protect the vampire world. Another idea is that they go on a journey to discover the true origins of their vampire species, uncovering long - lost secrets along the way. And perhaps they form an unlikely alliance with some of the werewolves in order to fight a common enemy.
One possibility could be that they start off as friends. Maybe they are on a dangerous adventure together, and in a moment of extreme closeness and shared vulnerability, their feelings turn romantic and lead to a loving encounter.