It could start with a character finding the nail. Let's say Naruto himself stumbles upon this nail. He initially doesn't think much of it, but as he goes about his daily life, strange things start to happen. Allies start acting differently towards him, and enemies seem more interested in him. It turns out the nail has some sort of chakra - binding property that is affecting those around him, and he has to figure out how to control or get rid of it.
Another plotline might revolve around how the overarching goals of the characters change. In the 'Naruto for want of a nail' concept, a single change can have a domino effect. So, if a certain mission fails due to this small change, the characters might have to reevaluate their long - term goals. Naruto may have to focus on different aspects of his training or a different enemy first, which would completely reshape the story's direction.
If a character is tasked with finding the nail, it could be a test of their determination. They might have to overcome many obstacles, and in the process, they become more patient and persistent. For example, if Hinata is on a quest for the nail, she could use this opportunity to prove herself not only to her clan but also to herself, thus growing in confidence.
The story could start with Naruto being mysteriously transformed into an animatronic. Then he has to figure out how to get back to his normal self while dealing with the animatronic world around him.
The story could be developed around the relationship Naruto has with his partner. Since he is only 12, it might be a more innocent and naive kind of love at first. They might grow together, learning from each other. Naruto could bring his determination and never - give - up attitude into the relationship, while his partner might teach him things about emotions and family values that he hadn't known before.
Sasuke is also highly likely to be affected. His relationship with Naruto and his own path of revenge could be drastically different. Maybe a small event that was supposed to bring them closer or push them further apart doesn't happen as expected, leading to a different dynamic between them.
One way is to focus on Naruto's other senses. For example, his sense of smell could become super enhanced, like a ninja version of Daredevil. He could use it to track enemies, find his friends in a crowd, or even detect hidden traps. His hearing could also be sharpened, allowing him to hear the faintest of footsteps or the rustling of leaves from afar, which would be useful in combat situations.
If Naruto becomes a Pokemon fanfiction, it could go like this. Naruto, being his curious self, would be intrigued by the concept of Pokemon. He might meet some Pokemon trainers who teach him the ropes. His natural leadership skills would help him in leading his Pokemon team. He could also bring some of his ninja tools and incorporate them into his Pokemon training and battles. For instance, using his kunai to mark the location of wild Pokemon. His journey would be filled with new adventures, making friends with other trainers, and learning about the different regions in the Pokemon world.
One way could be to make Naruto and his friends into SCP - like characters. Naruto's ability to use chakra could be seen as an anomalous power that needs to be studied and contained. The Leaf Village could be like a Foundation site, and they have to deal with other villages as if they were other 'threats' in the SCP universe. For example, Orochimaru could be a more menacing and SCP - style villain, with his experiments being even more grotesque and dangerous.
For Naruto, his usual determination and his never - give - up attitude can be further explored. He could be shown as more empathetic towards Yue's situation as a spirit. Yue's personality could start as a bit aloof and mysterious, but as the story progresses, they could become more open and trusting of Naruto. Maybe Naruto's positive energy starts to rub off on Yue.
One way the story could be developed is by showing Naruto's reasons for becoming a pickpocketer. Maybe he's desperate to help his village in some way and sees pickpocketing as a quick solution. For example, he could be stealing from the rich to give to the poor in Konoha. This would add a Robin - Hood - like aspect to the story.