Well, clearly Naruto and Jetstream Sam are the main characters. Naruto, a young ninja from the Hidden Leaf Village with his orange jumpsuit and dreams of becoming Hokage. Jetstream Sam, on the other hand, is a skilled swordsman with his own set of unique abilities.
One interesting story could be about Naruto and Jetstream Sam teaming up to fight a common enemy. They might combine their unique skills, like Naruto's shadow clones and Sam's swordsmanship, to take on a powerful villain.
One interesting Naruto and Sam fanfiction could be where Sam, from an unknown land, stumbles upon Naruto's world. They form an unlikely alliance to face a new threat that combines elements from both their worlds. Maybe Sam has some unique abilities that Naruto and his friends have never seen before, and they learn from each other along the way.
Naruto is often a great character in these fanfictions. His positive attitude and powerful ninja abilities can bring a lot of action and inspiration to the story.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of fan - created works, and you might be able to find some great Naruto and Sam fanfiction there. Just use the search function and type in 'Naruto and Sam' to get relevant results.
There could be a fanfiction where Sam, Cat and Naruto team up to solve a mystery. Sam's wits, Cat's charm and Naruto's strength would make for a great combination. For example, they might be trying to find a missing object that has special powers in both their worlds.
Sam could be just an ordinary guy who loves exploring the woods. He might be a nature enthusiast who spends his free time in the forest, and one day he just happens to come across Bella.
Dean is almost always going to be in these fanfictions when Sam is gagged. Their relationship is central to Supernatural. Rowena could also be a character. She might use her magic to either gag Sam for her own purposes or to help him if she has a change of heart. And Gabriel. He could turn up and use his trickster abilities to either put Sam in the gagged situation as a joke or to get him out of a more serious one.
Carly would probably be the first one to take care of Sam. They're best friends, after all. She'd bring her soup and make sure she has enough blankets.
One possible fanfiction could be about Sam and Mikaela starting a family. Maybe they find an abandoned Autobot baby. Sam, with his experience with the Autobots, wants to take it in and Mikaela is initially hesitant but is won over by the baby's cute beeps and whirs. They then face the challenge of raising a baby that has unique robotic needs while also trying to keep it a secret from the world.