One possible scenario could be that during a chaotic battle in the Civil War setting, Rhodey's suit malfunctions and he's about to crash. Peter, with his enhanced senses and web - slinging abilities, swings in just in time to catch Rhodey and safely land him. Another could be that Rhodey is trapped under some rubble from a destroyed building, and Peter uses his strength to lift the rubble off Rhodey.
His relationships might become more distant. With the events of No Way Home, he's lost a lot and might isolate himself from his friends to protect them from any further harm.
He could have adventures in new dimensions. Maybe he discovers a dimension where his loved ones are alive but everything is in chaos, and he has to use his powers to restore order.
Another aspect to consider is the context of the story. Is it set in a particular fictional universe that we know? If so, that will shape the events. For instance, if it's in a vampire - werewolf world like Twilight (assuming Bella is from that universe), Peter might be saving her from a vampire attack or something related to the complex politics of that world. The fanfiction could also deviate from the original source material in many ways, creating a unique story around Peter saving Bella.
'The Immortal Way Home' was a fantasy novel written by the author, who was going through a difficult time. The story was about the protagonist, Li Guanlin, who came from a different world, Blue Star. His obsession was to return to his hometown. Although his talent was average, his luck was not bad. On his journey to immortality, he met a group of people who accompanied him, including his free wife, his innocent little brother, his idiotic daughter, his invincible master, and his silly best friend. The novel had been updated to chapter 144, and the latest chapter was chapter 142. This was a world full of mortals 'hope for immortality, but for Li Guanlin, only his family in his hometown was his home. As for the specific plot and ending of the story, the current information was not enough to provide an answer.
If you want to know more about the follow-up, click on the link and read it!
One of the main themes is often danger and how Peter overcomes it to save Mila. This can involve different kinds of threats like villains or natural disasters. And there's also the theme of trust, as Mila has to trust Peter to be saved. In many of these fanfictions, the development of their relationship after the rescue is also explored in detail. For example, how they become closer friends or if there are any romantic feelings budding between them. The fanfictions might also touch on themes of sacrifice, where Peter might have to give up something in order to save Mila.
A prevalent theme is heroism. Erik is depicted as the hero in these fanfictions when he saves Peter. Also, the theme of redemption can be seen sometimes. If Erik has made mistakes in the past, saving Peter can be a way of redeeming himself. In many of these fanfictions, the journey of Erik to save Peter is also about self - discovery. He learns more about himself and his capabilities during the process.
One great 'Peter Saves Nina' fanfiction could be on Archive of Our Own. It might involve Peter using his unique skills, like his intelligence or combat abilities, to rescue Nina from a dangerous situation. Maybe she's trapped in a burning building and Peter bravely rushes in to save her.
I'm not sure specifically which are the 'best' as it depends on personal taste. But some stories that have a high number of views and positive reviews on fanfiction platforms could be considered good ones.