Maybe in the fanfiction, Harry uses the Time - Turner to train with long - dead great wizards. He travels back in time to learn from Merlin himself. Merlin could teach Harry ancient and powerful magic that has been lost over the centuries. This would give Harry an edge in his fight against Voldemort and also expand his understanding of the wizarding world's history.
In some versions, Harry might use the Time - Turner to train with different magical creatures. He could go back to a time when magical creatures were more approachable and learn from them. For instance, he could train with centaurs and learn their unique form of divination and combat magic. This would not only make him stronger but also help him form alliances with different magical beings.
Sirius Black could be a trainer. Sirius, being Harry's godfather, would be highly motivated to train Harry. He could use the time - turner to go back to a time when he was at his peak in terms of combat skills and pass on his knowledge to Harry, especially in the areas of dark - wizard fighting and survival skills.
One interesting plot could be that they use the Time Turner to prevent a major disaster at Hogwarts that was overlooked in the original story. For example, they might stop a dark wizard from infiltrating the school during an important event.
Well, in some fanfictions, the Time Turner is used to go back and change the course of the wizarding wars. This often involves complex plots where characters have to be very careful not to disrupt the entire fabric of time. Some fictions also explore the idea of the Time Turner falling into the wrong hands and the chaos that ensues, like dark wizards using it to gain an unfair advantage in battles.
One interesting plot could be Harry finding unique ways to practice magic in isolation. For example, he might discover a hidden corner of the Hogwarts grounds where he can train without distractions. He could be experimenting with spells that are not typically taught in class, pushing the boundaries of his magical abilities.
Well, in some fanfictions, Snape trains Harry to master the art of non - verbal spells more effectively. This gives Harry an edge in duels. Also, there could be a plot where Snape trains Harry in the history of dark magic not to use it, but to better defend against those who do. It's a way of making Harry more well - rounded in his magical knowledge.
One plotline could be a character using the Time - Turner to save a loved one who died in a previous battle. They go back in time, try to change the outcome of the battle, but end up creating a whole new set of problems because of interfering with time.
One interesting concept could be the Hogwarts Express being enchanted in new ways. For example, it might have the ability to travel through time as well as space. Another could be the idea of secret compartments on the train that are only accessible to certain students with special powers or knowledge.
One interesting 'Harry Potter Time Turner Accident' fanfiction could be where Hermione accidentally goes back too far and disrupts the founding of Hogwarts. This could lead to all kinds of chaos as the very foundation of the wizarding world starts to crumble. She might have to figure out a way to fix things before it's too late.
Some fanfictions focus on the consequences of Hermione misusing the Time - Turner. For example, she could accidentally create alternate timelines. In one such story, she goes back to change something small, but it has a ripple effect that completely alters the Hogwarts she knows. It's really fascinating to see how different authors explore the power and potential chaos of the Time - Turner in relation to Hermione.
One interesting plot could be time - traveling to the founders' era. The characters might witness the creation of Hogwarts and interact with the founders. They could learn the original intentions behind the house system and the hidden secrets of the castle.