A plot could be that their baby has some special abilities. Maybe it has an uncanny ability to sense danger, which is both a blessing and a curse. Peeta and Katniss have to figure out how to help their child control this ability while also keeping it a secret from those who might want to use the baby for their own gain. It could lead to a series of adventures as they move to different districts to keep the baby safe.
Perhaps the plot could revolve around the baby being a symbol of hope for the new world. Peeta and Katniss are initially worried about how the other districts will react to their baby. But as time passes, they see that the baby brings people together. The baby's birth could inspire new laws and a more unified government in the districts, as everyone wants to protect this new life and ensure a better future for it.
Maybe the story could focus on the challenges they face as new parents. Katniss might struggle with being over - protective, given the dangerous world they live in. Peeta, on the other hand, is more laid - back. Their baby girl could have some special abilities, like being able to communicate with animals like Katniss, which brings both excitement and fear as they try to keep her safe from those who might want to use her for their own gains.
The fanfiction might depict the baby as a symbol of hope for a new beginning. Katniss and Peeta could be seen trying to create a better world for their child. They would have to deal with the public eye being on them and their family. There could be heartwarming moments of them as a family, like family picnics in the meadow where they first fell in love, while also having to fend off any potential dangers to their baby.
A plot twist could be that the pregnancy is actually a symbol of hope for the districts in a way no one expected. Instead of being a liability or a target, the unborn child becomes a unifying factor. People from different districts start to come together to protect Katniss and Peeta and their baby, seeing it as a new beginning for Panem. Another idea is that the pregnancy is a catalyst for Katniss to discover new powers or abilities she didn't know she had. Maybe it's related to her connection with nature that becomes even stronger during the pregnancy, and she can use it to protect her family and the districts. Also, it could be that the baby has a connection to the long - lost secrets of Panem, like the true origin of the Hunger Games or the first rebellion, and this connection is only revealed during the pregnancy.
One possible plot twist could be that the pregnancy is a result of a Capitol experiment. Maybe they were unknowingly given some kind of fertility drug during their time in the Hunger Games. This would add a whole new layer of mystery and danger as they try to figure out what the Capitol's intentions are.
A great fanfiction could be that Katniss and Peeta's baby has a special bond with nature, just like Katniss. The baby discovers new ways to interact with the forest and uses this knowledge to bring about positive changes in their community. This could involve the baby learning about plants that can be used for medicine or food, and sharing this knowledge with others to improve their living conditions.
One possibility could be that they live in a peaceful district where they meet in a more ordinary way, like at a local community event. Maybe they become friends first and gradually fall in love without the threat of the Hunger Games looming over them. They could work together on community projects, like helping to improve the local school or organize festivals.
Peeta would probably be very nurturing. He has a kind heart, so he'd be great at taking care of the baby's basic needs like feeding and changing diapers. Katniss, on the other hand, might be a bit more cautious. She's used to being in survival mode, so she'd be constantly on the lookout for any potential threats to the baby.
You can try some popular fanfiction websites like Archive of Our Own (AO3). It has a vast collection of fanfictions on various topics, including those related to Katniss and Peeta having a baby.
Well, it could be about a young Katniss and Peeta training in a mini - arena for kids. Maybe they form an early alliance and learn basic survival skills together like finding pretend food and building small shelters.
Well, perhaps it could involve Peeta being really nervous but also overjoyed at the birth. He might be making sure Katniss is comfortable throughout the process, and there could be some sweet moments of him talking to the baby right after it's born.