A possible plot is that the Slytherins initially take care of Harry out of self - interest. They think that by protecting Harry, they can gain favor with Dumbledore or the Order of the Phoenix. But as time goes on, they actually start to care for him as a person. For example, a Slytherin girl who is good at herbology might use her skills to make special plants that can detect dark wizards approaching Harry. And a Slytherin boy from a pure - blood family could use his family's connections to keep tabs on any Death Eater plans against Harry.
One plot idea could be that the Slytherins secretly protect Harry from the more dangerous Death Eaters within their own families. They use their knowledge of the Slytherin common room's hidden passages to hide Harry when there's a threat. Another could be that a group of Slytherins form a sort of 'underground' protection squad for Harry after they realize he's the key to defeating Voldemort and they don't want Slytherin to be on the losing side. Maybe they start by leaving him helpful potions and anonymous notes with useful information.
One possible plot twist could be that the Slytherins, who are often seen as the 'bad guys' in the Harry Potter universe, discover a prophecy related to Harry while taking care of him. This prophecy might not be the same as the one in the original story and could lead them to protect Harry in a way that goes against their traditional Slytherin values. For example, they might have to form alliances with Gryffindors or other houses they usually oppose.
One heartwarming moment could be when the Slytherins protect Harry from a bully in Hogwarts. They might use their cunning to outwit the bully without using magic, showing that they care about Harry's well - being even in non - magical ways.
At first, Harry might be suspicious. But as the Slytherins keep showing kindness, he starts to see them in a new light. He realizes that not all Slytherins are like the ones he initially thought were mean.
Definitely Draco Malfoy. His internal struggle between his family's Death Eater ties and his own sense of right and wrong could be a central theme in the fanfic as he decides to take care of Harry. Then there's Theo Nott. He's a bit of an underrated Slytherin character in the original series, but in this fanfic, he could be the one with a lot of knowledge about dark magic and use that knowledge to protect Harry from any dark spells. And don't forget about Daphne Greengrass. She could be the voice of reason among the Slytherins, convincing them that taking care of Harry is the right thing to do.
The Slytherin house's reputation would likely improve. In the original story, Slytherin is often associated with dark magic and evil intentions. But if they take care of baby Harry, it shows that they are capable of kindness and selflessness. People would start to see that not all Slytherins are bad, and there are good - hearted individuals within the house who can look past the enmity between houses and do the right thing.
One idea could be Harry being placed in a foster home where the family has a secret magical heritage. They help him learn more about his own magic in a different way than Hogwarts. For example, they might have ancient spells passed down through generations.
Well, they might become more empathetic. Usually, Slytherins are seen as cunning and self - serving, but taking care of Hermione could soften them. For example, they might start to consider the well - being of others more often.
One idea could be Harry getting involved in Gremory family politics. He could use his unique skills and knowledge to help resolve internal disputes within the family.
Well, a plot could revolve around Harry accidentally awakening the mummy and then having to deal with the chaos that follows. The mummy might start causing strange things to happen in the town, like making the water turn to sand or the plants wither. Harry then has to find a way to reverse the mummy's awakening or at least control its actions. He could search for an old spell book that might have the answers.
One idea could be that Harry, being a playboy, gets involved in a series of high - society parties and romances. He might meet a mysterious woman who challenges his playboy ways and makes him question his lifestyle.