Well, it could be that Naruto works in a busy restaurant in Konoha. He might use his ninja skills to serve customers really fast, like using his shadow clones to take multiple orders at once.
There could be. Fanfiction often explores all sorts of alternate scenarios for characters. For 'Naruto is a waiter' fanfiction, check out Naruto - focused fanfic communities on Reddit too. Sometimes fans share their works or know where to find specific ones there.
In a seaside restaurant, there was a waiter called Mark. One sunny day, a family with small children came in. The kids were running around and being a bit rowdy. Mark didn't get annoyed. Instead, he brought some coloring books and crayons for the kids to keep them occupied. He also made sure to bring the family's food quickly. The family really appreciated his thoughtfulness and left a great review for the restaurant.
Well, the plot could be that Jenny is a time - traveler who accidentally lands in the Naruto universe. She has unique knowledge from her own time which Naruto finds useful in his battles. They form a quick bond as they try to figure out how to send her back while also dealing with the various threats in the ninja world.
It could be about Naruto obtaining kami - like powers. Maybe he discovers he has a connection to the kami and has to learn how to control these new powers to save the Hidden Leaf Village from a great threat. Or perhaps he is chosen by the kami to be a sort of bridge between the human and divine worlds in the Naruto universe.
In a 'Naruto is Valkorion' fanfiction, the plot could start with Valkorion sensing a strange new energy, which turns out to be Naruto. Naruto, not fully understanding the 'Star Wars' universe, could start causing disruptions. As he comes to understand Valkorion's role, he might decide to help Valkorion in his fight against other dark forces, but only if Valkorion agrees to follow Naruto's more moral code. This would lead to a series of adventures where Naruto tries to change the 'Star Wars' universe for the better while being in Valkorion's position.
One possible plot could be that Naruto is somehow transported to the world of Five Nights at Freddy's. He wakes up inside the dilapidated building as Springtrap. Maybe it's a result of some jutsu gone wrong or a powerful enemy's curse. Naruto, now in the form of Springtrap, has to figure out how to break the spell while also dealing with the animatronics that are out to get him. He might use his ninja skills in unexpected ways, like using chakra to control the movements of Springtrap more effectively or using his stealth abilities to avoid detection by the other animatronics.
Well, it could be about a shopkeeper in the Naruto world who has a special shop that sells rare ninja tools. Maybe the shopkeeper has a secret past as a former ninja and uses his knowledge to help young ninjas find the perfect items for their missions.
In a 'Naruto is Batman fanfiction', Naruto could take on Batman's sense of justice. He would be more brooding and serious, much like Batman. Maybe he would even create a secret identity within the village. His costume could be a blend of his usual orange jumpsuit and some elements of Batman's suit, like a cape that has special abilities, like being able to turn invisible or something.
Perhaps in this fanfiction, Naruto is chosen as the Kamikage due to his unique abilities and his reputation for bringing peace. He then has to deal with political intrigue within the village he's now leading. There could be rival clans vying for power and Naruto has to use his wits and strength to keep the peace. He might also introduce some of Konoha's training methods to improve the shinobi of this new village.
One possible plot could be that Naruto discovers some sort of scroll or ancient text that tells of a powerful warrior like Kenpachi from another world. He becomes fascinated and starts to train in a more aggressive, Kenpachi - like style. His friends are initially confused but then see how his new style gives him an edge in battles.