Another idea is a character swap. Picture Naruto as a Power Ranger Samurai. He would bring his ninja skills and determination to the team. His Rasengan could be transformed into a special attack for his Samurai Zord. Or, a Power Ranger Samurai could be sent to the Naruto world and have to learn ninja techniques to survive and help the village.
A more complex fanfiction could involve a time - travel plot. The Power Rangers Samurai are sent back in time to the era when the ninja villages were first founded in the Naruto world. They have to work with the early ninja clans to prevent a dark force from changing the course of history in both the Naruto world and their own world.
One idea could be that Naruto is somehow transported to the world of Power Rangers Dino Thunder. He might team up with the Dino Thunder Rangers to fight a common enemy. For example, an enemy that has the power to use both ninjutsu and some sort of prehistoric energy. Naruto could teach the Rangers some of his ninja skills like the Shadow Clone Jutsu which could be useful in battle.
One idea could be a crossover where Naruto characters are transported to the world of Power Rangers Dino Charge. They could team up with the Rangers to fight a common enemy. For example, Naruto's ninjutsu skills could be combined with the Rangers' Dino powers for some really cool battle sequences.
Another fanfiction concept could be that Kira is sent on a mission to the Naruto world. There, she meets Naruto and they start training together. Naruto teaches her some ninja techniques, and in return, Kira shows him how to better control his chakra using the principles of her Ranger powers.
One idea could be to have the Naruto characters end up in the Power Rangers Ninja Steel universe. They could learn about the Ninja Steel powers and use their own ninja skills in combination. For example, Naruto's shadow clone jutsu could be used in a creative way during battles against the villains in the Power Rangers' world.
One idea could be a crossover where the Naruto characters are transported to the world of Power Rangers Ninja Storm. They could team up with the Power Rangers to fight a common enemy, like an evil ninja clan that has the power to use both Naruto - style jutsu and the technology - based weapons of the Power Rangers. For example, Naruto could teach the Rangers how to better control their chakra, while the Rangers could show Naruto some cool new combat moves using their morphers.
Maybe the villains from Power Rangers Lightspeed Rescue find a way to enter the Naruto universe. The Rangers follow them and team up with Naruto and his friends. They could teach each other their fighting techniques. The Rangers could show Naruto how to use their high - tech weapons, while Naruto could teach them about chakra and ninjutsu.
In this fanfiction, the Power Rangers could be facing a new type of threat that they can't handle alone. So, they use some kind of magic or technology to call for help from the Naruto and Tales of Berseria universes. The characters from those two worlds arrive and they have to learn to work together. The ninjas from Naruto can teach the Rangers some stealth and combat techniques, while the Tales of Berseria characters can offer their knowledge of magic and the use of artes. Together, they form an unlikely but powerful alliance to save all their worlds.
One idea could be a crossover where Kimberly somehow gets transported to the Naruto universe. She could use her Power Ranger skills to team up with Naruto and his friends against a common enemy, like an Akatsuki member who has some connection to the forces of evil in the Power Rangers world.
One idea could be that Naruto is somehow transported to the world of Power Rangers Jungle Fury. He could learn their unique fighting styles and incorporate them into his ninja skills. For example, he might use the Jungle Fury Rangers' animal - based attacks in combination with his shadow clones.
In a fanfiction scenario where Emily is kidnapped, perhaps the kidnappers are after some special power she has that she doesn't even know about yet. The Power Rangers would then have to not only rescue her but also figure out what this power is and how to protect it. Maybe they'd discover some ancient scrolls that give them a clue about her power.