Their relationship could also develop through shared experiences outside of work. Maybe they start to play chess together (Reid would probably be really good at it, but Tony could surprise him with his own strategic thinking). They could also have dinners together and talk about their lives, their dreams, and their fears. This would make them closer as they get to know each other on a more personal level.
As they face challenges together, their bond would strengthen. For instance, if they are in a dangerous situation, they would rely on each other. Tony might protect Reid in a physical confrontation, while Reid would use his knowledge to get them out of a tight spot intellectually. Over time, they would become more like a real family, sharing inside jokes and having each other's backs no matter what.
One common theme is the clash and then the melding of their personalities. Dinozzo is often portrayed as the more practical and action - oriented one, while Reid is the brainy and sometimes naïve one. Their interactions based on these differences are a big part of many fanfictions.
One plot idea could be that they discover they are brothers through a mysterious family secret. Maybe there's a hidden inheritance or a long - lost relative that leads them to this realization. Another could be that they have to work together to solve a crime that has a personal connection to their new - found brotherhood, with their different skills complementing each other. For example, Tony's street smarts and Reid's academic knowledge.
Their relationship could develop in a rather chaotic way. Loki might play pranks on Tony using his magic, which would annoy Tony at first. However, as Tony gets used to Loki's antics, he starts to see the humor in it. Meanwhile, Loki starts to admire Tony's determination and ability to create amazing things. They could have a love - hate relationship for a while, until a big event, like an alien invasion, forces them to fully trust and support each other.
To develop their characters further, they could be placed in a cross - cultural investigation. Tony, with his more worldly experience in some ways, and Spencer with his encyclopedic knowledge. They would have to learn from each other and adapt. Tony could learn more about different cultures on a deeper level from Spencer's research, and Spencer could learn how to interact with people in different cultural settings from Tony's practical experience. This would add new layers to their personalities and their relationship.
One great piece of Tony Dinozzo and Spencer Reid fanfiction is 'The Unlikely Bond'. It delves into their relationship as they work together on a complex case. The story really captures their different personalities well, with Dinozzo's more laid - back and street - smart nature contrasting Reid's intellectual and sometimes socially awkward side.
At first, their relationship might be a bit rocky. Gaara has been through a lot of trauma and Naruto, though friendly, might not be fully understood by Gaara immediately. But as time passes, they start to trust each other more. They could share their past experiences, like Naruto talking about his loneliness as a child because of the Nine - Tails, and Gaara sharing his own pain of being ostracized in the Hidden Sand. This sharing would bring them closer.
Their relationship might start off a bit rocky as they have different personalities. But as they face challenges together, like fighting against the Fire Nation, they start to understand and respect each other more. For example, Aang might initially not understand Sokka's practical and sometimes cynical view, but when it helps them out of a tough situation, he begins to value it.
A more comical plot could be that they are forced to live together for some reason, like a family obligation. Tony's more outgoing and Reid's more introverted nature could create a lot of humorous situations as they try to co - exist. For example, Tony might try to get Reid to go out and party, while Reid just wants to read his books in peace.
One interesting plot idea could be that Tony and Spencer are assigned a particularly difficult case. They have different approaches at first, with Tony relying on his street smarts and Spencer on his vast knowledge. As they work together, they start to understand and respect each other's methods more, and in the end, they solve the case in a way that combines both of their strengths.
As Peter grows older, he may start to question some of Tony's decisions, which could cause some tension in their relationship. However, this is also a sign of Peter becoming more independent. Eventually, they would work through these differences. For instance, Peter might disagree with Tony on how to deal with a new superhero threat. But after some discussions and a bit of trial and error, they would find a way to combine their ideas and become an even stronger team. This process of growing, disagreeing, and then reconciling would be a major part of how their relationship develops over time.