If the device in the fanfiction is a time - traveling gadget, it could completely transform Harry's life. He could go back in time to learn from the founders of Hogwarts, understand the origin of certain dark magic, and use this knowledge to prevent future disasters in his own time. It would also give him a chance to meet his parents and gain a deeper understanding of his own heritage.
It could be Dumbledore. He always has a knack for providing Harry with useful tools. Maybe he found this device during one of his travels and thought it would be beneficial for Harry's growth as a wizard.
It could be a magical time - traveling device. Maybe it allows Harry to go back in time to change certain events in the wizarding world, like preventing some of Voldemort's early atrocities.
It could change his relationships. If the device has some unique function like showing a person's true intentions, it might make Harry more cautious about who he trusts. On the other hand, it could also help him strengthen his bonds with his true friends. For instance, if it can record and replay memories, he could share more intimate and important moments with Ron and Hermione, deepening their friendship even further.
In fanfiction, a device could teach Harry Potter about advanced magic theories. Imagine a device that contains the collective knowledge of all the great wizards in history. It could show him spells that have been long forgotten or new ways to manipulate magic. This new knowledge could help him in his battles against Voldemort and also in his journey to become a more powerful and well - rounded wizard.
He becomes more brooding. The knowledge of necromancy and the power it brings can isolate him as he realizes it's a power not many understand or accept. So he might withdraw from his usual jovial self.
Well, it's fairly common. Fanfic writers often use this as a means to create drama and tension. Since Sirius is such an important and mysterious figure in Harry's life, the idea of him kidnapping Harry can lead to all sorts of interesting storylines. It can also be a way to rewrite parts of the original story, perhaps to give Sirius more agency or to create a different kind of adventure for Harry.
Yes, it can be. In many fanfictions, authors like to play around with the existing elements of the Harry Potter universe and add new twists. Having Harry Potter in possession of the Soul Stone can open up a whole new set of storylines. It can lead to different power dynamics, new challenges for Harry, and unique interactions with other characters.
The device could be a magical time - traveler. Since James Potter was known for his adventurous and somewhat mischievous spirit. He might create a device that allows him to go back in time to relive some of his greatest pranks or to change certain events in the wizarding world for the better. For example, he could use it to prevent some of Voldemort's early evil deeds.
In Harry Potter fanfic, Parseltongue can be a powerful plot device in many ways. Imagine a fanfic where the dark forces are using Parseltongue to communicate their evil plans. The hero, who also happens to be a Parselmouth, overhears them and has to find a way to stop the plot without being discovered. Or perhaps a fanfic where an ancient prophecy is written in Parseltongue, and the characters must decipher it to save the wizarding world. It can also create interesting relationships between characters. For example, two Parselmouths from different sides of a conflict might have a unique connection through their shared ability, which could lead to unexpected alliances or betrayals as the story progresses.