Maybe it could be about Harry's insecurities at first with getting braces. He might be worried about how his friends will react, especially if he has a crush on someone at Hogwarts. But then as the story progresses, his friends support him and he learns to embrace his new look.
One possible plot could be that Harry gets braces during his time at Hogwarts. His friends might tease him a bit at first, but then they get used to it. Maybe the braces have some magical properties, like they glow when he's near a powerful magical object or they help him with his spells in a unique way.
Maybe it could be about Bella's journey of getting used to having braces. For example, she might initially feel self - conscious, but then she discovers new confidence as she sees the positive changes in her teeth over time.
Perhaps the fanfiction focuses on how Lincoln gets braces and it changes his appearance. His crush could either like the new look or be put off by it at first. He then has to deal with his feelings of insecurity while also trying to show that he's still the same Lincoln, braces or not. For example, he might still be the one to come up with great plans for family outings or helping his siblings with their problems.
Hermione would definitely be one of the main characters. She could be the one to research all about braces in the wizarding library to see if there are any magical implications or ways to make the process easier for Harry. And she would offer him lots of advice and support.
Ron would also be a main character. He might start off by making fun of Harry's braces, but then he would stand up for Harry when some of the Slytherins start to bully him because of it. Ron could also try to use the braces to his own advantage in some comical ways, like using them as a slingshot for Bertie Bott's Every Flavour Beans.
In the 'harry gets a tattoo fanfiction', he might get a tattoo as part of a bet or a dare. His friends challenge him and, being the brave Harry we know, he accepts. The tattoo could be something really out - of - the - ordinary, like a moving image of his Patronus. This could lead to all sorts of adventures as he tries to hide it from the more conservative members of the wizarding world.
In this fanfiction, perhaps Harry saves a girl from a dangerous magical creature during one of his adventures outside of Hogwarts. She's so grateful and as they spend more time together healing her wounds and such, they develop feelings for each other.
Well, perhaps Voldemort's followers could kidnap Harry to use him as a bargaining chip. They might hold him in an old, dark wizarding house, guarded by dark magic. Harry would then try to escape using his own magic skills and the help of some unexpected allies like house - elves who secretly oppose Voldemort.
In the 'harry gets a gun fanfiction', it could be that Harry is given the gun by a mysterious figure. This figure might have an ulterior motive, like using Harry as a pawn in a bigger game. Harry then has to decide whether to trust this person and what the implications of having the gun are for his own safety and the safety of those around him.
In a 'Harry Potter gets emancipated' fanfiction, the plot could involve Harry getting emancipated due to his special status as the Boy Who Lived. With his emancipation, he could take charge of his own finances, which were a mess in the hands of the Dursleys. He could then use his money to fund independent research on dark magic defenses. Maybe he'd even start a small group of like - minded students who are also frustrated with the slow - paced and sometimes - inaccurate teachings at Hogwarts.