Well, one interesting plot could be that all his friends have to take care of him. They might struggle to train him as they did before because he's just a baby. Another could be that his enemies don't recognize him at first and underestimate the baby Naruto, but then he still shows some of his ninja skills in a very cute and unexpected way.
One interesting plot could be that the other Avengers have to take care of baby Peter. They struggle with things like changing diapers and feeding him, all while trying to figure out how to turn him back. It would be really funny to see tough heroes like Thor or Iron Man being clueless about baby care.
One interesting plot could be Naruto, as a girl, having to deal with the different expectations of the ninja world towards females. For example, she might face challenges in being taken seriously in combat training at first. Another plot could involve Naruto's friends' reactions. Some might be really confused, while others could quickly accept and support 'her'.
In some 'naruto turned into a girl fanfic', a cool plot is that she might have to disguise herself as a boy again at times. This could lead to some really funny and tense situations. Also, she could form new relationships with female characters in a different way. For instance, she might bond more closely with Sakura over 'girl - talk' type of things while still having the bond of being a ninja together.
Well, in the fanfic, Harry as a girl might have a different experience with the sorting hat. Instead of being sorted into Gryffindor easily like before, the sorting hat could consider her new personality traits due to the gender change. She might even end up in a different house, which would completely change her Hogwarts experience. And her interactions with the other houses' students would be very different too.
Well, one possible plot could be Naruto being disowned due to false accusations of him being a threat to the village. Maybe some villagers spread rumors that he has some hidden dark power, and the village elders, believing the lies, decide to disown him. This would then lead Naruto on a journey to prove his innocence and find his true place in the world.
One interesting plot could be Naruto going on a journey to find a way to clear his name. He might meet new allies who believe in his innocence and together they face various challenges.
Well, one interesting plot could be that Naruto gets trained by an unexpected mentor, like a hidden shinobi from a far - off village. This new mentor might teach him unique jutsu that give him an edge early on.
Another possible plot is that Naruto struggles with the Kyuubi's instincts within his new body. He has to balance his own values and will with the primal urges of the Kyuubi. This internal conflict could be really fascinating as he tries to stay true to himself while harnessing the power of the Kyuubi body, and it could also lead to some character development where he becomes even more self - aware and in control of his emotions and powers.
A great plotline could be the mystery behind who turned Hermione into a baby. It could be a dark wizard trying to stop her from achieving something in the future. As a baby, Hermione might start showing some unusual magical abilities that she didn't have before, which could attract the attention of both good and bad forces in the wizarding world. And her friends would be in a race against time to protect her and find a way to turn her back.
Sakura could be a main character. She might be the one who takes on a motherly role towards baby Naruto. She'd be very protective and try to teach him basic things. Kakashi could also be important. He'd use his wisdom to figure out how to deal with this situation and also keep an eye on Naruto's safety.