One possibility is that Naruto is on a mission in a new and strange land. He stumbles upon Vibranium, not knowing what it is at first. He might try to use his chakra on it and discover its unique properties. Maybe he then has to protect it from villains who want to use it for evil purposes.
Well, in this fanfiction, Naruto could be drawn to the Vibranium because of its energy. Since he's sensitive to different types of energy, he might think it's some kind of new chakra source. He then teams up with some local characters who also know about the Vibranium. Together, they explore the uses of Vibranium and how it can be incorporated into Naruto's ninja world. For example, they could try to make new weapons or defenses using Vibranium, all while facing challenges from those who oppose this new discovery.
Well, one possibility could be that Naruto is somehow transported to a different realm where Excalibur exists. Maybe he's on a mission and stumbles upon it. He might initially be confused about this strange, powerful sword but then realize its significance. He could then face challenges from those who also want the sword, and his ninja skills would come in handy in protecting Excalibur.
One possible plot could be that Naruto stumbles upon the glove during one of his missions in a strange, other - dimensional realm. He might initially be curious about it, not knowing its true power and the evil associated with it. As he investigates, he starts to have strange nightmares similar to those Freddy Krueger induces, and he has to figure out how to stop the glove's influence using his ninja skills and chakra.
One possible plot development could be that Naruto discovers the scrolls in an old, abandoned hideout. Maybe the hideout is full of traps set by Sasori long ago. Naruto, with his ninja skills, has to overcome these traps to reach the scrolls.
He would probably be curious. Naruto is always eager to explore new things. He'd touch it, try to break it with his strength, and when he fails, he'd be even more intrigued.
The shield could be a symbol of protection. Naruto has always been on the front lines, so finding a shield might mean he's finally getting some extra defense. It could also be a way to show his growth, as he now has a new tool to master and use in battles.
On FanFiction.net, use advanced search options. Look for keywords like 'unexpected', 'plot twist', or 'surprise' along with 'Naruto' in the search bar. This will narrow down the results to fanfictions with unique plot elements. AO3 also has a tagging system. Search for tags like 'unconventional' or 'twisted plot' combined with 'Naruto' to find such stories.
One possible fanfiction could be that Naruto stumbles upon a secret lab in Konoha. Maybe it's a place where some new jutsu or technology related to ninja tools is being developed. He might initially be curious and a bit scared, but his adventurous spirit leads him to explore further.
Perhaps Naruto is invited to Kiri to participate in a grand ninja tournament. In Kiri, he meets old friends who are also competing. He has to face off against some tough opponents from Kiri in the tournament. Along the way, he learns about Kiri's history and the importance of the tournament to their village. He also uses this opportunity to strengthen the bonds between Konoha and Kiri.
One possible plot could be that Android 21 somehow ends up in the Naruto universe. Maybe she is initially seen as a threat due to her power. Naruto, being the kind - hearted hero, tries to understand her instead of attacking right away. They could team up to fight a common enemy that has the potential to destroy both their worlds.
One possible plot could be that Naruto discovers an anaconda in a hidden forest during one of his training missions. The anaconda might be a magical or special creature. Naruto could try to communicate with it using his unique ability to understand animals. Maybe the anaconda has some connection to an ancient power or prophecy in the Naruto world, and Naruto has to protect it from those who want to use it for evil purposes.