The settings themselves offer a lot of creative potential. When you put the feudal - like ninja villages of Naruto into the space - age world of Futurama, it allows for all kinds of interesting scenarios. For example, a ninja battle taking place in the Planet Express building, or the Futurama crew having to deal with a ninja - style assassination attempt in their world.
A very creative 'Naruto' fanfic idea could be a time - travel one. For example, Naruto travels back in time to prevent the Uchiha massacre. Another idea is a fanfic where the ninja world is merged with the fairy - tale world. So Naruto could be fighting against the Big Bad Wolf or teaming up with Cinderella. And a fanfic where the Sharingan has a completely different power, like the ability to control the weather, would also be a very creative concept.
Another creative way is to combine wind and earth elements in a way that creates a sandstorm - like jutsu with razor - sharp edges. The wind would carry the earth particles and give them speed and cutting ability. This jutsu could be used to both blind and attack opponents at the same time. It would be a very unique combination that takes advantage of the properties of both wind and earth elements.
One plot idea could be Mildred getting involved in a time - traveling adventure. Maybe she accidentally gets sent to a different era in the Futurama universe and has to find her way back while dealing with the strange characters and situations of that time. For example, she could end up in the pre - apocalyptic world and have to team up with some of the early inventors to fix the time - travel device.
A common theme is culture shock. Naruto coming from his feudal - like ninja world into the high - tech Futurama universe is a big deal. Another theme is power exchange. For instance, how would Futurama's technology work with Naruto's chakra? Also, friendship often plays a role. As Naruto tries to make friends in the new world and the Futurama characters learn to accept this strange new person.
Another aspect could be that chikushodo is incorporated into the training of young ninja. A sensei in the fanfiction might teach chikushodo to students as a way to develop their instincts and reflexes. This could lead to some really interesting character development, as the students learn to think and act more like animals in combat situations, such as being more aware of their surroundings or having quicker reaction times.
A really creative plot is the one where Naruto and Tatsumaki are in a world where their powers are swapped. Naruto has to deal with Tatsumaki's psychic powers and her reputation in her world, while Tatsumaki has to figure out how to use chakra and live as a ninja. It's full of humorous moments as they struggle to adapt to their new powers, but also shows how they can grow and learn from each other's experiences.
The concept of bringing the villains from both universes together is also quite creative. For example, Orochimaru and Lord Farquaad teaming up against Naruto and Shrek. It creates a whole new dynamic and a lot of interesting plot twists as the heroes have to figure out how to defeat this unexpected alliance.
One creative idea is a time - travel fanfic where Holo travels to the Naruto universe during a crucial moment in the ninja world's history. Her presence changes the course of events in unexpected ways. For example, she might use her knowledge and charm to broker peace between warring clans.
Some fanfictions have the concept of Naruto being a long - lost relative of Daenerys' family. This idea is quite out - there but it allows for a lot of creative storytelling. It can lead to Naruto having a claim to the Iron Throne and a whole new set of adventures as he tries to help Daenerys claim her rightful place while also dealing with his own new - found heritage.
Perhaps in some fanfictions, Naruto is the only one who can see Tinkerbell in the Naruto world. So he has to keep her a secret while also using her help to solve various problems in the Hidden Leaf Village. This idea plays on the idea of Naruto being an outcast at first and now having this unique secret.