What could be the plot of a 'Harry Potter Summer Training' fanfiction?

Dumbledore could be the instructor. He might have a special training program in mind for the students. He could teach them about the deeper mysteries of magic, like the secrets of the Hallows or the true nature of the Deathly Hallows. His wisdom and experience would make him an excellent teacher for the students during the summer training.

In this fanfiction, Harry might learn advanced defensive magic from a long - lost wizard. For example, he could be taught ancient spells that are not in the Hogwarts curriculum. This would give him an edge against Voldemort and his Death Eaters.

Perhaps it focuses on the changes in Harry's relationships. He might grow closer to some friends while drifting apart from others. For example, his bond with Hermione could strengthen as they explore some new magical mystery together during that summer. And his relationship with the Dursleys could also take a turn, like they finally start to show a bit of understanding towards him.

He could work at Weasleys' Wizard Wheezes. He has a good relationship with the Weasley family, and it would be a fun place for him to work, helping with inventing and selling all kinds of magical pranks and toys.

Well, he might work at Weasleys' Wizard Wheezes. He could help George and Ron with inventing new products and dealing with customers. It would be full of magical mishaps and lots of fun.

'The Changeling' is a notable fanfiction. It focuses on the character development of a new student at Hogwarts, with a plot full of mystery and magic. This fanfiction is great for training in imagining new storylines within the existing framework of the Harry Potter world.

Well, it could be that Harry is training for a big wizarding tournament. He might be learning new spells and combat techniques from a mysterious and strict mentor. Maybe he has to endure physical and mental challenges that test his limits.

It could be Zeus. He is a powerful god and might see Harry as a worthy candidate for training. He could teach Harry about leadership and power control.

Well, he might get training in magical knowledge. Such as learning about different magical plants and their uses. He could be taught by an old wizard in his neighborhood. This knowledge would give him an edge when he starts at Hogwarts, especially in Herbology classes. Also, he could be trained in magical navigation, like how to use a map of the wizarding world or find his way in enchanted forests.

Maybe Dumbledore in a more in - depth way. In the original series, Dumbledore was somewhat mysterious in his teachings. Here, he could really focus on Harry's growth and give him proper training, perhaps in the art of divination and understanding prophecies better.