Well, perhaps the baby could have a special gift. For example, the ability to communicate with the Eywa in a more direct way than others. This could lead to the baby guiding the Na'vi through a difficult time, like a drought or an attack from an unknown enemy. Also, the story could focus on the baby's relationship with other Na'vi children. They might face some challenges in fitting in due to their unique parentage, but eventually overcome them and become a beloved part of the community.
One idea could be about their adventures together exploring new parts of Pandora that haven't been shown in the movie. They could discover new species and work together to protect them.
One interesting fanfiction could be about Jake and Neytiri's first encounter from Neytiri's perspective. It might explore her initial thoughts and feelings when she saw this strange 'alien' among them. Another could be a story set in the future of Pandora, where they face a new threat together and their relationship is tested in the face of danger. And there could also be a fanfic that delves into their family life, how they raise their children and pass on the values of the Na'vi.
Well, their baby might have the ability to connect deeply with the Eywa, just like Neytiri. Since Jake has his own unique human - Na'vi hybrid skills, the baby could inherit a special form of communication that combines both human and Na'vi ways. Maybe it could have enhanced physical abilities, such as being an even faster runner or a more agile climber than the average Na'vi.
One possible plot idea could be exploring how they prepare for the new arrival. They might start building a new and safer home within the Hometree or in a special place in Pandora. Another idea could be how they deal with the reactions of the tribe. Some may be excited and supportive, while others might be worried about potential changes. Also, they could face challenges like finding the right food and resources for the pregnancy.
One interesting plot could be Jake and Neytiri facing a new, unforeseen threat to Pandora while also dealing with their relationship growing stronger. Maybe they have to team up with some unexpected allies.
To develop the baby's character in fanfiction, consider their experiences. Maybe they have a close encounter with a dangerous creature on Pandora and it makes them more cautious but also curious. Also, their interactions with the other Na'vi clans can play a role. If they are exposed to different cultures within the Na'vi world, they can become more open - minded and diplomatic. Their character can also be shown through their dreams and aspirations. For example, they might dream of uniting all the Na'vi clans in a new way that no one has thought of before.
I really like 'Neytiri and Jake: A New Adventure'. This fanfiction takes them on an unexpected journey across Pandora. It has an interesting plot where they discover new parts of their world and their bond is tested in different ways. It's full of action and also some really tender moments between them.
One prevalent theme is the cultural differences between Jake, a human turned Na'vi, and Neytiri, a native Na'vi. Fanfictions often deal with how they bridge these differences and learn from each other. Also, family is a theme. How they start their own family and raise their children in the unique environment of Pandora is often explored.
The baby could bring new ideas and ways of thinking. Since it's a product of Jake, a human, and Neytiri, a traditional Na'vi. It might introduce concepts from human culture, like new forms of art or more advanced tool - making techniques. This could lead to a renaissance in Na'vi society.
One popular trope is the 'forbidden love' aspect. Since Jake is from a different species and culture, their relationship can be seen as something that goes against the norms in both of their worlds, which adds an exciting element to the story.