One way the Time - Turner could be contaminated in fanfiction is through a magical accident. Suppose there's a big magical experiment going on near the Time - Turner, and something goes wrong. The resulting magical backlash could contaminate the Time - Turner. This might make it behave erratically, like skipping over certain time intervals when it's used or causing time - jumps that are too large or small. It could also potentially affect the memories of those who use it while it's contaminated, scrambling or even erasing parts of their recollection of the time - traveling experience.
In certain fanfictions, the contamination of the Time - Turner could be due to improper handling or storage. For example, if it's placed near a powerful magical artifact that emits unstable magic, that magic could seep into the Time - Turner and contaminate it. This could lead to time - related chaos, like creating time loops that were not originally intended or sending people to the wrong time periods. Another possibility is that a character who doesn't fully understand the Time - Turner's mechanics tries to modify it, and in the process, they accidentally contaminate it with their own unskilled magic.
In some fanfictions, the Time - Turner might work in a similar way as in the original books. It allows the user to go back in time for a limited period, like a few hours. For example, a character could use it to redo a failed spell or prevent a small accident from happening at Hogwarts.
The Time Turner can completely change the plot by allowing characters to redo actions. For instance, if a character fails a mission in the original plot, with the Time Turner, they can go back and try again, which might lead to a different outcome for the whole story.
The consequences can be chaotic. It might lead to altered timelines. People could end up in the wrong era or at the wrong moment in history, changing the course of events in the wizarding world.
In some fanfictions, the use of the Time Turner causes some tension in their relationship at first. Maybe Hermione is worried about the consequences of misusing it, while Harry is more eager to take risks. But as they go through different time - traveling scenarios, they learn to balance each other out and their relationship becomes stronger. They start to understand each other's perspectives better and this helps them communicate more effectively in other aspects of their lives too.
In fanfiction, the Time - Turner can be a tool to bring Hermione and Snape closer. For example, if Hermione uses it to help Snape with a past event, he may start to trust her more. This newfound trust can change their relationship from one of animosity in the original story to a more collaborative and understanding one. They might share secrets and knowledge that they wouldn't have otherwise.
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.
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.
In some fanfictions, Harry might use his powerful magic skills, like advanced spells he's learned secretly, to outwit Umbridge. For example, he could create a series of complex illusions that confuse her and lead her to leave Hogwarts on her own.
Well, it could be that she broke some important rule or did something that really angered another character, and they decided to send a howler to give her a piece of their mind. Or perhaps it was a misunderstanding that led to the howler being sent to her.
One great 'Harry Potter Time Turner' fanfic is 'Time's Ripple'. It offers a unique take on how the Time Turner could be used in different situations not explored in the original books. It's really engaging as it delves into the consequences of time travel in the wizarding world.