One great fanfiction could be 'A Day at St Mungo's with Harry Potter'. In it, Harry might be visiting the hospital for some post - battle check - ups or to see a friend who's been injured. It could show the different wards and the unique magical maladies being treated there.
A common plot twist is that St Mungo's is not as safe as it seems. In some fanfics, there are hidden chambers in the hospital where dark magic experiments are being carried out.
Adventure is also a big theme. Combining the magical and often dangerous world of Harry Potter with the adventurous and mischievous nature of St Trinians students can lead to all sorts of exciting plots. Whether it's exploring a new part of the wizarding world together or getting into trouble with dark wizards, the characters are often thrown into thrilling adventures that test their skills and relationships.
Lottery St Catchpole might be a place that ties into the local wizarding community in a Harry Potter fanfic. It could be a street where a particular family of witches or wizards live. Maybe it has a special shop that sells rare magical items or a place where local magical traditions are carried out. It gives the author a chance to explore different aspects of the wizarding world that weren't fully covered in the main series.
One interesting 'Harry Potter 1st year fanfiction' could be about Harry making more friends in his first year than in the original story. For example, he might befriend a shy Hufflepuff student who helps him discover a hidden passage in the castle. Another could focus on how Harry copes with the pressure of being famous during his first year in a different way, like starting a club for first - years who feel out of place.
One of the main themes is friendship. Harry, Ron, and Hermione form a strong bond throughout the story. Another theme is the discovery of self - identity. Harry learns about his magical heritage and his place in the wizarding world.
Harry Potter himself is very important. He's the protagonist. Then there's Ron Weasley, his first friend at Hogwarts. And Hermione Granger, who is really smart and helps them a lot.
Fanfiction.net is a great place to start. It has a large collection of 'Harry Potter' fanfictions, including many focused on the first year. Archive of Our Own (AO3) is also a good option. There are many talented authors on these platforms who write engaging 'Harry Potter 1st year fanfiction'.
I've also heard of fanfictions where the teachers from St Trinians and Hogwarts have to collaborate for some reason. Picture Professor McGonagall and the St Trinians headmistress working together to solve a problem that involves both their schools. It would be a clash of teaching styles and values, but in the end, they might learn something from each other.
One interesting 'Harry Potter St Brutus' fanfic could be one where Brutus has a secret connection to the wizarding world in Harry Potter. Maybe he was a wizard in hiding all along, and his actions in his own story were somehow related to the dark forces in the Potterverse.