Well, in some Harry and Draco toys fanfiction, the toys might come to life. For example, the toys could be miniature versions of themselves or their friends at Hogwarts. Harry and Draco then have to deal with the chaos that these living toys create. Maybe they start to see the world from the toys' perspective and learn some valuable lessons about friendship and rivalry along the way.
There could be a plot where a dark wizard has cursed all the toys in a wizarding toy store. Harry and Draco, despite their differences, are the only ones who can break the curse. They start by exploring the store, finding out the origin of the toys, and using their combined magical knowledge. As they progress, they realize that they need to trust each other more than they thought, and this experience changes their relationship for the better.
One idea could be that Harry and Draco find a magical toy that has the power to transport them to different wizarding worlds. They have to work together to find their way back home. Another could be that they both inherit a collection of enchanted toys from an old wizard, and they must figure out how to use the toys to solve a mystery in Hogwarts.
One idea could be that Harry and Draco find an abandoned magical baby and they have to work together to take care of it. This forces them to put aside their differences and learn about each other in a new way.
One idea could be a story where Harry, Draco, and Severus are forced to work together on a dangerous mission to save Hogwarts from a new dark threat. They start off distrusting each other but gradually learn to respect and rely on one another.
One idea could be a story where Draco, Harry and Hermione are forced to work together on a special magical project for the Ministry. They start off hating each other but gradually come to respect one another's skills. Another plot could involve them getting trapped in an alternate magical dimension where they have to rely on each other to find their way back. Maybe Draco has some knowledge of the dark magic that created the dimension, Harry has his Gryffindor courage to lead them through dangerous areas, and Hermione uses her vast knowledge to figure out how to break the spell that trapped them.
Well, perhaps Draco, in the role of Merlin, has a special connection to the magical creatures that he uses to help Harry. Harry, as Arthur, is trying to unite the different factions of the wizarding world. Draco's knowledge of magic, similar to Merlin's, allows him to create magical artifacts or spells that assist Harry in his quest for unity. And there could be a love story involved too, like Guinevere and Arthur, but in the context of the wizarding world with some other character and Harry.
Another idea is that the OC is a Muggle - born with an amazing talent for potions. They end up in a class project with Harry, Draco, and Blaise. Their different approaches to the project (Harry's courage, Draco's ambition, Blaise's shrewdness) and the OC's out - of - the - box thinking create a really interesting dynamic as they compete and also learn from each other.
One idea could be that Draco and Harry are forced to work together secretly in the Chamber of Secrets to solve a mystery that Dumbledore suspects is bigger than just the basilisk. They find a hidden chamber within the Chamber of Secrets that contains a powerful magical artifact from the founders' time, and they must figure out how to use it to save Hogwarts.
A possible plot is a mystery - solving one. There's a strange magical occurrence in Hogwarts that is affecting both Gryffindors and Slytherins. Hermione starts investigating, and she enlists the help of Sirius (who could be a ghost or somehow back in a semi - corporeal form). Harry is naturally drawn to help Hermione, and Draco gets involved because it might affect his family's standing. As they dig deeper, they find out that it's an ancient curse set by a long - forgotten wizard, and they have to find a way to break it using their combined skills and knowledge.
Well, perhaps they meet in a hidden part of Hogwarts, like an old abandoned classroom. They start exchanging secret notes and small gifts, but they're constantly worried about getting caught. There could be a plot where Draco's family starts to suspect something and he has to work hard to keep Harry a secret from them. It would add a lot of tension and drama to the story.
A possible plot for this fanfiction could be that Voldemort is still a threat, and they hide their relationship to protect each other. If Voldemort or his Death Eaters were to find out about their relationship, they could use it against them. So they keep it a secret even from some of their closest allies. They might also have to deal with the internal struggle of wanting to be open but knowing the risks are too great. This could lead to some very emotional and tense scenes in the fanfiction.
One plot idea could be a story where Blaise and Draco have to team up with Harry and Hermione for a special magical tournament. They start off as reluctant allies but gradually learn to respect each other's skills. Another could be a mystery - something strange is happening at Hogwarts and the four of them must put aside their differences to solve it. For example, students are losing their magical abilities one by one, and they suspect a dark magic artifact hidden in the castle.