One idea could be that Noodlehammer Naruto has some unique jutsu related to his 'noodlehammer' concept that he teaches to the original Naruto. This could lead to new ways of fighting enemies in the Naruto world. Another plot could involve them teaming up to face a powerful new villain who is immune to normal ninja techniques but is vulnerable to the strange powers of Noodlehammer Naruto.
Noodlehammer Naruto would probably be really enthusiastic and a bit wacky due to his unique concept. The original Naruto might be initially confused but then get excited about the new ideas. They'd likely bond over their shared determination and love for the village.
One idea could be Boruto getting transported back in time and meeting a young Naruto. He could then help Naruto avoid some of the early hardships he faced, but also realizes that those hardships made Naruto who he is. Another could be Naruto and Boruto switching bodies for a day, which would lead to humorous situations as they try to navigate each other's lives. A third idea might be that Boruto discovers a hidden power within himself by training with Naruto in a special dimension where time moves differently.
One idea could be that Ichigo and Naruto are transported to a strange new dimension where they have to work together to find their way back home. They start by comparing their skills and learning from each other. For example, Naruto could teach Ichigo some of his shadow clone techniques, while Ichigo shows Naruto how to use his zanpakuto more effectively.
In some fanfictions, they could meet during a time - travel incident. Naruto from the present meets Naruko from the past or vice versa. They then exchange knowledge about the future or past events, which changes the course of their own timelines. This could lead to some really interesting character development as they both try to adapt to the new information and how it affects their relationships with their friends and family.
Maybe Kagome is mistaken for a new ninja from a far - off land. She has to quickly learn the ways of the ninja while also trying to find a way to return to her own time. Naruto could be the one to help her adapt and in the process they learn from each other's unique abilities.
In some fanfictions, they meet in a situation where Sasuke has lost his memory. Naruto then takes it upon himself to help Sasuke regain his memories and in the process, they go on various adventures together, facing different challenges that test their bond all over again.
One idea could be that there's a portal that accidentally brings Naruto to Star Butterfly's dimension. At first, he's confused by all the magic and strange creatures. Star tries to help him get back home, but they end up on an adventure together. They discover a powerful artifact that an evil force also wants. So, they have to protect it while trying to find a way to send Naruto back.
One idea could be that the Fairy Tail guild travels to the Naruto world somehow. They could team up with the ninja to fight a common enemy like a powerful dark magic user who has also invaded the ninja world. Maybe Natsu's fire magic could be compared and combined with Sasuke's fire jutsu in some unique ways during battles.
One idea could be that Neji discovers a new hidden power within Naruto that he helps Naruto master. This could lead to them having to face a new, powerful enemy together.
One interesting plot idea could be a time - travel story. For example, Naruto is sent back in time to the era of the First Hokage. He could use his knowledge of future jutsu and events to change things for the better in the past. Another idea is a story where Naruto discovers a hidden clan within Konoha that has a unique and powerful Kekkei Genkai. He then has to help this clan gain acceptance in the village. A third idea might be a story where Naruto is turned into a different creature, like a cat or a fox, and has to find a way to turn back while still dealing with the normal threats to the village.