Well, he might use his magic to defeat the dragons in Skyrim. Maybe he'd introduce some new spells to the mages there. It could be really interesting to see how his Hogwarts-trained skills fare against the challenges of Skyrim.
In the fanfic, Harry Potter could end up at the College of Winterhold. He'd probably be shocked by their different style of magic. He might teach them about the magic of the wizarding world, like how to make a proper invisibility cloak, while also learning about their magic like enchanting with soul gems.
He might use his magic to defeat the dragons in Skyrim. His spells could be a new and powerful force in that world.
He might be amazed by the grandeur of Asgard. Its golden palaces and powerful magic could both intrigue and intimidate him. Maybe he'd meet Thor and they'd exchange stories about their different kinds of magic and heroic deeds.
In this fanfic, perhaps Harry might discover hidden secrets of Potter Manor. He could find old family heirlooms or secret rooms that were unknown to him before.
Well, perhaps Snape would be even more surly during the summer. He might assign Harry extra potions work as a form of punishment or to keep him out of trouble. Harry, on the other hand, would probably be more rebellious in a fanfic scenario during summer, as he's away from the strictures of Hogwarts. Maybe he'd try to uncover some secrets about Snape that he suspects.
In fanfic, when Harry Potter goes to Gringotts, he might discover some long - lost secrets about his family's vault. There could be hidden spells or artifacts that were left there by his parents or ancestors.
In the fanfic, Harry Potter going to military camp would be really interesting. Firstly, his magical abilities would surely give him an edge in certain military drills. He could use spells to create illusions during stealth training. Also, his experience in fighting dark wizards would make him a valuable asset in strategic planning. He might face some challenges too, like having to hide his magic from others in the camp all the time.
Well, he might use his magic skills to impress the other campers. For example, he could magically make the campfires burn in different colors or levitate objects during a talent show at the camp.
Well, Harry could be really confused at first. Ouran is a very different world from Hogwarts. He might be shocked by the opulence of Ouran Academy and the strange club system there. Maybe he'd try to find a way to fit in while still being true to his wizard self.
In the 'Harry goes to the hospital fanfic', it's possible that Harry is injured during a Quidditch match. He is then rushed to the hospital. There, he could discover a hidden part of the hospital that has some ancient magic stored. He might also have some deep conversations with his friends who come to visit him about their future plans and the current state of the wizarding world.
It's possible that in 'harry goes on holiday fanfic', Harry decides to go to a place that is completely different from what he's used to, like a beachside magical town. There, he could engage in activities such as learning new water - based magic spells. He could also encounter some challenges, like dealing with a group of mischievous magical sea creatures. And his holiday might be a time for him to relax and get away from the usual hustle and bustle of his life at Hogwarts, but still, adventure seems to follow him everywhere.