Well, Naruto might be looking for some special ninja tools in Tenten's shop. Maybe he's on a mission and needs something specific, like a new set of shuriken.
In the 'naruto goes to tenten shop fanfic', Naruto could be there to get a gift for a friend. Since Tenten has a wide variety of items in her shop, he might be searching for that perfect present. He could be asking Tenten for advice on what would be suitable for, say, Sakura or Kakashi.
There's a chance Naruto meets some of Tenten's regular customers. These could be other ninja from the village who are also looking for supplies. Naruto might interact with them, sharing stories about his recent adventures while they browse through the items in the shop.
There are a lot of possibilities. Maybe Tenten would take Naruto on little adventures around the village while babysitting. They could visit the local ramen shop, and Naruto would of course be thrilled. Tenten could also tell Naruto stories about her own ninja training and adventures, which would inspire Naruto even more. Since Naruto doesn't have parents around, Tenten might also end up giving him some motherly - like advice and care.
Well, Naruto might sell ramen in his shop. After all, he loves ramen so much. He could have his friends like Sasuke and Sakura helping out sometimes. Maybe there would be special ninja - themed items for sale too.
In the 'naruto goes to amegakure fanfic', Naruto might encounter new and powerful ninja. He could learn unique jutsu specific to Amegakure. Maybe he'll make new friends or face off against some hidden enemies there.
In the 'naruto goes to kumo fanfic', Naruto could be on a mission in Kumo. He might make new friends or enemies. He could also learn new jutsu from the ninjas in Kumo. It could be a great opportunity for him to grow as a ninja and expand his understanding of the ninja world.
Perhaps Naruto goes to Orochimaru in an attempt to redeem him. Naruto has a strong belief in the good in people, and he might think that he can convince Orochimaru to stop his evil ways. He could offer Orochimaru a chance at redemption, like a new start in the Hidden Leaf Village if he gives up his dark experiments and ambitions. This would lead to a complex relationship development between them, with Orochimaru being skeptical at first but gradually considering Naruto's offer.
In a 'naruto goes berserk fanfic', Naruto might lose control of his chakra in a new and extreme way. Maybe he's pushed to the edge by a powerful enemy that he can't defeat with his normal strength.
In a 'naruto goes crazy fanfic', Naruto might start to use his powers in unpredictable and extreme ways. He could go against his usual moral code and attack his friends or allies by mistake, perhaps due to some powerful dark influence or a misunderstanding of a new jutsu he's acquired.
Well, in the 'naruto goes to ame fanfic', Naruto might encounter new and dangerous enemies in the Hidden Rain Village. He could also meet some interesting characters that are unique to this fan - made story. Maybe he'll discover some hidden secrets about the village or its people.
Maybe Naruto will encounter new types of ninjas in the North. He could learn unique jutsu or skills that are specific to that region.