Well, 'Harry Potter Snaps' fanfiction is unique because it takes a relatively minor or unmentioned element like snaps and builds entire storylines around it. It gives authors the freedom to explore uncharted territories within the wizarding world. For example, snaps could be used to unlock hidden powers or memories. It also enables the creation of new plot devices, like snaps being used as a form of secret communication between certain groups or characters, which adds a whole new layer of intrigue to the stories.
Well, it could be about Harry finally losing his patience with all the constant threats and dark magic. Maybe he decides to take a more aggressive approach against Voldemort and his Death Eaters, instead of always waiting for them to make the first move.
In fanfiction, if Harry Potter snaps his wand, he might lose a great deal of his magical power. His wand is his primary tool for casting spells, so without it, he'd be in a very vulnerable position. He could start to explore alternative forms of magic or seek out a new wand, perhaps through some extraordinary adventure. This could also lead to him relying more on his friends and the skills he has developed outside of wand - based magic.
Well, a really popular 'Harry Potter Snaps' fanfiction is 'A Snaps' Tale'. It has a unique take on how snaps can be used as a form of magic communication in ways not explored in the original books. Then there's 'Snaps of Destiny' which weaves a story around how certain snaps are fated to happen and change the course of the wizarding world. And 'The Mystery of Snaps' is quite engaging as it tries to solve the enigma of these snaps within the Harry Potter universe.
Voldemort would still be a major character. After all, he is Harry's main antagonist. If Harry snaps, it would likely be in relation to his ongoing battle with Voldemort. And the Death Eaters, as Voldemort's followers, would also be involved. They would be on the receiving end of Harry's new, more aggressive stance, and their reactions would shape the story further.
The story would change drastically. Harry would be without his main means of magic. His enemies might take advantage of this. For example, Voldemort would see it as an opportunity to attack. Harry would have to rely on his wits and the magic he can do without a wand, like some basic spells he might have learned instinctively. His friends would also be more protective of him, and they might have to work harder to keep him safe.
One possible plot could be that Harry discovers some new information about his parents that makes him see Snape in a different light. However, instead of handling it calmly, he snaps because of all the pent - up anger and confusion. For example, if he finds out that Snape had a more complex role in his parents' lives than he thought. His snapping could involve shouting at Snape in front of the whole school, which then sets off a chain reaction of events that slowly changes their relationship from one of enmity to something more like a father - son dynamic, full of misunderstandings and reconciliations.
One unique fanfiction is about a character from a different wizarding school who somehow gets involved with the Goblet of Fire at Hogwarts. This character has their own set of magical abilities and traditions that clash and blend with those of Hogwarts, creating a really engaging story full of cultural exchanges and magical mishaps.
Harry Potter and Severus Snape are the central figures. However, the other Hogwarts professors could also be important. For instance, McGonagall. She might be the one who tries to calm Harry down after he snaps at Snape or she could be the one who encourages Snape to be more understanding towards Harry. Then there are the Death Eaters. If the fanfiction is set in a context where Voldemort is still a threat, the actions of the Death Eaters could impact the relationship between Harry and Snape. They could be the catalysts that force Harry and Snape to work together and ultimately strengthen their father - son - like bond.
There's a fanfiction titled 'Harry's Rage Against Snape' which shows a different side of Harry. In this story, the author builds up the tension between them over several chapters until Harry finally snaps. It also explores how the other characters react to this outburst, which is quite interesting.