One idea could be that Naruto discovers a lost child during one of his missions. He decides to take the child under his wing. The child might have some unique power that attracts the wrong kind of attention, and Naruto has to protect the child while also teaching them the ways of the ninja. It could also involve Naruto trying to balance his duties as Hokage and being a father figure to the child.
Another plot could be that the child is an orphan because of a new threat in the ninja world. Naruto feels responsible for the child's well - being. He starts to raise the child with the help of his friends like Sakura and Kakashi. They train the child together, and as the child grows, they discover that the child has a special connection to an ancient prophecy. Naruto then has to ensure the child is ready to face whatever the prophecy entails.
One idea could be Minato teaching Naruto how to master the Rasengan at a very young age. Since Minato was the creator of it, he could pass on his in - depth knowledge. Another plot could be Minato protecting Naruto from the early threats that Naruto faced in the original story, like the Akatsuki's early interest in him. Also, Minato could introduce Naruto to the other powerful ninjas of the Hidden Leaf in a more personal way, which would change Naruto's relationships and his standing in the village.
Another idea is Naruto helping Gaara control his tailed beast better. Naruto, having a tailed beast of his own, could share his techniques and experiences. He might take Gaara to a secluded place where they can practice without any distractions. This would not only strengthen Gaara's control but also deepen their bond as they face similar challenges.
One plot idea could be Kurama teaching Naruto some ancient and powerful jutsu that only he knows. Since Kurama has a vast knowledge of chakra and ninja techniques from long ago, he could pass on this knowledge to Naruto in a unique way, like through dreams or during their mental conversations.
One plot idea could be Kushina teaching Naruto about the Uzumaki clan's secrets. For example, she could show him unique sealing jutsus that were passed down in their family. Another idea is Kushina helping Naruto deal with the villagers' hostility towards him in a more proactive way, perhaps by sharing her own experiences of being an outsider when she first came to the village. Also, she could train Naruto in chakra control in a different way compared to Jiraiya, focusing on the Uzumaki's natural affinity for large amounts of chakra.
One interesting plot could be Naruto discovers a forbidden jutsu that allows him to raise the dead accidentally. He then has to deal with the moral implications of bringing back his fallen comrades, like Sasuke's family. Another idea is that the enemies get hold of the same jutsu and raise powerful dead shinobi against the Hidden Leaf.
One plot idea could be Orochimaru seeing some potential in child Naruto that is different from the Nine - Tails. Maybe he wants to train Naruto in a different form of jutsu, not for evil but for some self - serving yet not completely malicious purpose. For example, he could be interested in Naruto's ability to make friends and wants to use that to his advantage in the ninja world.
One idea could be their child having a special power that neither Naruto nor Ino possess. For example, the ability to communicate with animals in a very unique way. This could lead to adventures where the child helps solve problems in the village related to the animal kingdom.
Maybe the ghost child is the result of a curse placed on a family in Konoha. Naruto stumbles upon the mystery when he notices strange occurrences around a particular house. The child's ghost is bound to the place due to the curse. Naruto then tries to find a way to break the curse with the help of his friends. Another plot idea could be that the ghost child is from a different dimension that somehow got linked to the Naruto universe. The child is scared and alone, and Naruto has to figure out how to send the child back home while also protecting the world from any potential threats that might come with the connection between the two dimensions.
One idea could be a child genius Naruto who quickly masters advanced jutsu way before his peers. For example, he might figure out how to combine multiple elemental jutsu at a young age, creating a completely new and powerful attack.
One plot idea could be that Snape takes Hermione under his wing after he discovers her extraordinary magical potential at a young age. He secretly trains her in advanced potions and dark arts defense, much to the surprise of the other Hogwarts faculty. Another could be that Hermione's parents die unexpectedly, and Snape, having a soft spot for her intelligence, steps in as a guardian. He helps her navigate the complex wizarding world politics while she tries to uphold her muggle - born values.