Well, if 'Peter Slavov Little Stories' is something like a book or a series of stories, it might cover a wide range of themes. Maybe they are stories about his life experiences, his travels, or just fictional stories he made up. But again, without further details, it's all just speculation.
Since I don't know the actual content of 'Peter Slavov Little Stories', it's hard to determine the genre. It could be autobiographical if they are based on his own experiences. Or it could be fictional, perhaps falling into the category of short stories.
One common theme is the discovery of powers. Since Peter is often depicted as a young character in these fanfictions, the exploration of how he first realizes and starts to control his powers is a big part of it.
The main character is of course Little Peter Rabbit. His mother is also an important character as she gives him advice at the beginning which he ignores. And then there's Mr. McGregor, the owner of the garden that Peter Rabbit enters.
One possible moral could be about the consequences of disobedience. Little Peter Rabbit doesn't listen to his mother and goes into Mr. McGregor's garden where he faces all kinds of dangers. So it might be teaching kids to listen to their parents or guardians.
One interesting 'little space' Peter Parker fanfiction could be where he's in his little space during a break from superhero duties and just enjoys simple things like building Lego sets in his apartment. It shows a different, more vulnerable side of him.
Adventure is a common theme. Just like in the original Peter Pan story, the little girl in the fanfiction often goes on exciting adventures in Neverland. For example, she might explore new parts of the island or have battles with pirates.
There might be a fanfiction where Peter Parker accidentally gets transported to the Guardians of the Galaxy's universe. Peter Quill then has to help him get back home while they deal with some intergalactic threats along the way. This could lead to some really fun interactions as they learn about each other's worlds.
There's also 'The Adventures of Little Peter Parker'. In this fanfiction, Peter is depicted as a child going through everyday life in Queens while also having these amazing secret powers. It has some really heartwarming moments, like when he helps an old lady cross the street using his super - speed, all while trying to keep it a secret.
Captain Hook could be the main villain. He might see the Little Mermaid as a new target or a way to get to Peter Pan. He could try to capture her and use her as bait to lure Peter Pan into a trap.