Gibbs would be a great character to include. He could be the one who notices the growing relationship between Ziva and Tony before they even realize it themselves. He might give them some sage advice or just be there as a sort of father figure guiding them through the early stages of their relationship.
He could start by looking on fanfiction websites such as Archive of Our Own (AO3). It has a large collection of fan - created works from various fandoms, including those related to characters like Ziva. Another option might be FanFiction.net. There are often dedicated sections for different shows and their characters where he can search specifically for Ziva - related fanfiction.
Obviously, Tony and Ziva are the most important. But there could also be their friends from work. Like McGee, who might be helping Tony with his vows or something. And Abby could be in charge of the music or the decorations. Then there could be some characters from Ziva's past in Mossad, perhaps an old mentor who comes to give her away at the wedding.
Well, it could be about all the preparations for their wedding. Maybe they argue over the guest list, like Tony wants to invite all his old buddies from the agency and Ziva has her own list of Mossad contacts. Then there could be a really sweet moment when they choose their wedding rings, with Tony picking out a simple but elegant one for Ziva, and Ziva finding a cool ring that has some meaning related to their adventures together.
Tony should first identify well - known and respected authors in the Ziva fandom. He can do this by looking at the most popular or frequently recommended stories and seeing who the authors are. These authors are more likely to produce high - quality work. Also, he can follow fanfiction communities on social media platforms like Twitter or Reddit. Fans there often discuss and recommend high - quality Ziva fanfiction.
Another plotline could be that after Ziva leaves NCIS, Tony realizes how much he misses her. He then sets out on a journey to find her and when he does, they have a heart - to - heart conversation that rekindles their old flame. They then have to figure out how to make their relationship work with all the complications of their past and their different lives.
Well, perhaps they are undercover in a foreign country. They have to blend in with the local culture, which leads to some humorous situations like Tony trying to learn the local dance or Ziva struggling with the language but still managing to intimidate people. And then there's the danger aspect, where they discover a terrorist cell operating within the city they are in and have to stop them without blowing their cover.
One possible storyline could be that Tony and Ziva decide to raise the baby while still being involved in NCIS cases. They might struggle to balance their dangerous jobs with parenthood, like having to take the baby to the office at times in emergencies. There could also be a lot of cute moments where the NCIS team acts as aunts and uncles to the baby.
The whole team would likely rally around them. They might have a baby shower at the office, with everyone bringing in gifts. Ducky would be excited to have a new little one around and would probably tell stories about when Tony and Ziva were young agents. Palmer would also be helpful, maybe offering to babysit on occasion so that Tony and Ziva can have some time to themselves.
Some fanfictions explore the idea of Ziva and Tony starting a family. It shows how they would handle the challenges of parenting while still being involved in their dangerous line of work. There are also stories that revolve around them solving a particularly difficult case that hits close to home for one of them, which brings out new aspects of their relationship.