An owl that has been enchanted to transform into a human - like form could hand - deliver a letter. This would be a very unique and magical concept. Maybe it's a special owl from the Forbidden Forest that has a message from an ancient and powerful being hidden in Hogwarts. It would bring an element of mystery and wonder to the fanfiction.
A Hogwarts student, like Ron. Ron could hand - deliver a letter from his mother to Harry. Mrs. Weasley might be worried about Harry and send a letter full of motherly advice and a knitted jumper. Ron's delivery would add a touch of friendship and family - like bond between the Weasleys and Harry.
Well, it could be a love letter from one character to another. Maybe Ginny secretly writes a letter to Harry, pouring out her feelings, and she hand - delivers it to him in a secluded corner of Hogwarts. This would add a romantic and secretive element to the story.
Nymphadora Tonks is also a great candidate. She's a Metamorphmagus, which means she can change her physical form. In hand - to - hand combat in fanfiction, she can use this ability to surprise her opponents. For example, she could suddenly make her limbs longer to reach further or make her body more flexible to dodge attacks more easily.
It could be his loyal owl, Hedwig. She might be staying with him in the attic, providing comfort and also being a messenger for him when he needs to communicate with his friends outside.
Well, in fanfiction, Neville Longbottom could be one of the visitors. He and Harry could exchange gardening tips as they explore the manor's gardens. Additionally, Dumbledore's portrait might be magically transported to Potter Manor, and he could offer his wisdom and guidance to Harry as he lives in the manor. And of course, Hagrid might come with some magical creatures to show Harry, adding more excitement to the manor.
His friends from Hogwarts, like Ron and Hermione, are likely to help. Ron could bring his family's practical knowledge of wizarding homes and Hermione would contribute with her extensive research skills.
Hermione would be a great help. Her vast knowledge of magic and books could provide the necessary information for building the planet, like the right spells and magical theories.
He might meet Canadian witches and wizards. There could be a friendly wizard who shows him around the Canadian wizarding community.
He might meet international aurors. These are highly skilled wizards from different countries who are experts in dark wizard catching. They could teach Harry some new combat spells.
His friends from Hogwarts like Hermione and Ron would most likely support him. They have always been by his side through thick and thin in the original story, so in the fanfiction, they would continue to support Harry in his fight against the Ministry.
He could meet Fleur Delacour's family. Since Fleur is from France, her family might be an important part of the French wizarding community that Harry interacts with.