One possible theme could be family and new beginnings. With Tris and Tobias having a baby, it would explore how they adapt to their new roles as parents in the post - Divergent world. Another theme might be protection. They would have to protect their baby from any remaining threats in their society.
I'm not sure about specific baby fanfiction for Tris and Tobias. You could try searching on fanfiction platforms like Archive of Our Own. They have a large collection of Divergent - related fanfics, and you might be able to find some that focus on this particular aspect.
In Divergent fanfiction, the Tris and Tobias kiss is special because it often represents hope. In a world full of conflict and division, their relationship is a beacon. The kiss can be seen as a celebration of their survival, their love in the face of danger. It can also be a symbol of the unity that they might bring to their factions or the entire society they live in. It's a moment that fans look forward to and cherish in the fan - created stories about them.
The Tris - Tobias kiss in fanfiction also serves to engage the readers on a deeper level. It gives fans of the Divergent series a chance to explore their relationship further. For example, a writer might describe how Tris's small hands grip Tobias's shirt as they kiss, and how Tobias's strong arms hold her tightly, making the scene more vivid and relatable to the readers who are invested in their relationship.
One interesting plotline could be them training new initiates together. They could share their own experiences and wisdom, and there could be some conflict when they have different teaching methods. Another plotline might be them going on a mission outside of the factions to explore an unknown area and facing various challenges together, like dangerous terrains or new, strange groups of people.
I'm sorry, I don't have specific fanfiction to recommend directly. But you can try looking on fanfiction platforms like Archive of Our Own. Search for 'Divergent Tris and Tobias' and then filter out the works that are not appropriate or too sexual in nature. There are likely many great stories out there that focus on their relationship in a more PG - 13 or family - friendly way.
One plot idea could be about Tris and Tobias mentoring young initiates together. They could share their different experiences and skills, and we could see how they interact as teachers, guiding the next generation. For example, Tris could teach the initiates about her fearless approach in the face of danger, while Tobias could show them how to be disciplined.
There are several places you can look for such fanfic. Fanfiction.net is a great resource. You can search for 'Divergent Tris and Tobias' and then filter through the results to find ones that focus on their relationship in a non - sexual way, like stories about their adventures together in the Divergent world or how they support each other during tough times.