There's a fanfic called 'De - Aged Stark's New Adventures'. In this story, de - aged Tony forms an unlikely friendship with a young inventor. They work together on projects that could change the world. It's interesting to see how Tony's adult knowledge combines with a child's creativity in this one.
In the fanfiction 'Tony Stark: Young Again', the author delves deep into Tony's emotional state when he's de - aged. He has to face his past traumas all over again, but this time with the wisdom he's gained as an adult. It also shows how his relationships with the Avengers change when he's in a younger form.
One possible scenario in this fanfiction could be that a de - aged Tony Stark brings a new perspective to the events of Civil War. He might be less jaded and more idealistic, trying to find solutions that the older, more conflicted Stark couldn't see. Maybe he forms unexpected alliances with other characters based on his fresh outlook.
The 'family - like bond' trope is often seen. De - aged Tony forms closer bonds with the people around him, almost like a family. They protect him and he in turn, uses his genius to help them. For instance, he might become like a little brother figure to some characters. And there's also the 'coming - of - age' trope even though he's already an adult. He still has to grow in this new de - aged state, learning new things about himself and the world.
A possible plotline is that the de - aged Peter and Tony have to work together to solve a problem that only their combined knowledge, both from the present and Peter's future - self's knowledge, can fix. For example, they might need to stop a villain who has a time - related weapon that de - aged Peter in the first place. This would involve Peter using his spidey - sense in a different way as a kid and Tony using his tech skills to analyze the weapon and figure out how to reverse its effects not just on Peter but also on any other potential victims.
There's a fanfic titled 'Stark's Dance Steps'. It shows Tony at a high - society event where he decides to break the monotony of small talk with his amazing dance skills. He surprises everyone as he combines his suave personality with some really cool dance moves. It's a fun read that showcases his charisma.
I really liked 'Sherlock in Stark Tower'. In this fanfic, Sherlock gets transported to the Marvel universe and ends up in Stark Tower. Tony Stark is initially skeptical of him but soon realizes Sherlock's unique abilities. They then start working together on a case that has stumped SHIELD. It's full of interesting interactions between the two characters and some really creative plot twists.
One great fanfiction in this genre is 'The Younger Malfoy'. It shows an interesting dynamic between a young Draco and Harry. They end up having to work together in a situation where Draco's de - aging has caused a stir in the wizarding world.
The de - aged Tony could also form a mentor - mentee relationship with a younger Avenger. He has the knowledge and experience of his older self but the energy and fresh perspective of his de - aged self. This relationship could be a key factor in how the story progresses, as he imparts his wisdom in a different way and the younger Avenger helps him see things from a new angle, which could potentially change the course of the Civil War in the fanfiction.
At first, Tony might be skeptical about the whole situation. But as he sees the de - aged Peter's potential and his spidey - sense in action, he starts to warm up. They could develop a relationship where Tony is constantly protecting Peter from both physical threats and the knowledge of the future that Peter might accidentally reveal. Peter, on the other hand, would be in awe of Tony's intelligence and resources and would try to learn as much as he could from him. Their relationship would be a mix of mentorship, friendship, and a bit of a father - son dynamic.
One great autistic Tony Stark fanfiction is 'A Different Perspective'. It shows Tony's character through the lens of his autism in a really interesting way. His genius is still there but his interactions and thought processes are shaped by his autistic traits.
There's a fanfic called 'Tony's Surprise'. In it, Tony decides to throw a big party for all the Avengers, but he also secretly arranges a cute little magic show for them. He's all smiles and charm throughout the story, which is what makes it a cute fanfiction. It has a lot of fun interactions between Tony and the other Avengers, and his witty remarks are on point.