In some 'naruto goes blind fanfiction', an interesting plot could be Naruto having to rely on his other senses more. For example, his sense of smell and hearing become super sharp, allowing him to detect enemies and navigate in battles like a true ninja. He might also develop new jutsus that are more suitable for his blind state, like a sound - based attack that can stun opponents.
One plot could be that Naruto's blindness is a result of a powerful curse. This curse was placed on him by an unknown enemy. As he struggles with his blindness, he discovers that the curse has some sort of hidden power within it. He then has to figure out how to use this power to his advantage while also trying to break the curse. Along the way, he meets some new characters who either help or hinder his journey to regain his sight and power.
In some 'naruto goes mad' fanfictions, Naruto might be driven mad by the loss of his friends. For example, if Sasuke were to die in a battle, Naruto could lose his grip on sanity. Another plot could be the result of some dark jutsu being used on him, like a genjutsu that messes with his mind. Maybe a powerful enemy targets his mental state to turn him into a weapon against the Hidden Leaf.
Well, in some 'naruto goes to alternate universe fanfiction' plots, Naruto might find himself in a world where all the ninja clans have merged into one big super - clan. He'd have to navigate the complex politics within this new structure. Also, there could be a plot where he enters an alternate universe where the Fourth Great Ninja War never happened, but there are new threats emerging that he has to face. And then there's the idea of a universe where Naruto's parents are alive, and he has to deal with a completely different family dynamic.
One interesting plot could be Naruto Uchiha using his future knowledge to prevent the Uchiha massacre. He might try to change the minds of the village elders and stop the cycle of hatred before it spirals out of control.
One interesting plot could be that female Naruto goes back in time and uses her knowledge from the future to prevent the destruction of her village. She might try to stop certain villains from emerging or change the fates of her friends who died in the original timeline. For example, she could stop Orochimaru's early evil plans, which would have a huge impact on the story's development.
One interesting plot could be Kurama using his knowledge from the future to prevent certain tragedies in Naruto's past. For example, he might stop Orochimaru's early attacks on Konoha more effectively. Another plot could be Kurama helping Naruto train earlier and more efficiently, leading to Naruto becoming much stronger at a younger age. And perhaps Kurama could also change some of the relationships within the village, like improving Naruto's standing among the villagers much sooner.
One interesting plot could be Naruto using his future knowledge to prevent some of the tragedies that happened in the original story. For example, he might be able to stop the Uchiha massacre. Another plot could be him training his younger self, leading to a much stronger Naruto earlier on. And perhaps he could also change the relationship between the different ninja villages, promoting more peace and cooperation from an earlier stage.
Well, one interesting plot could be Harry going to an American wizarding school and comparing it to Hogwarts. Maybe he discovers new magical creatures there that are unique to America.
One possible plot could be Harry being influenced by dark magic artifacts. For example, he might find an ancient cursed object that gradually corrupts his mind and makes him turn dark. Another could be that he is betrayed by those he trusts, which pushes him over the edge into darkness.
One interesting plot could be Harry having to deal with the Slytherin's traditional pure - blood supremacist views while trying to stay true to his own values. He might face challenges from some of his Slytherin housemates who initially look down on him for his 'half - blood' status.
Some fanfictions might have a plot where Harry goes to Azkaban to rescue someone. It could be a friend or a relative who has been wrongly accused. Along the way, he has to navigate the dangerous corridors of Azkaban filled with various traps and curses. He might also meet some old enemies who are also in Azkaban and they try to stop him from achieving his goal. In addition, the magic that keeps Azkaban intact could be a key part of the story, like Harry has to figure out how to manipulate it to his advantage.