One idea could be Naruto using his shadow clone jutsu to handle multiple kids at once. He could make clones to play different games with the children, like one clone for tag and another for hide - and - seek.
Maybe in the fanfic, Naruto is babysitting the kids of his friends. He could tell them stories about his adventures, like the time he fought against Pain in Konoha. This would both entertain the kids and also pass on the values of courage and perseverance.
Another aspect could be Naruto struggling with the more delicate tasks of babysitting, such as getting a fussy baby to sleep. He might try all kinds of ninja - like tricks, like using a gentle wind jutsu to create a soothing breeze in the room.
Well, one interesting idea could be how the babysitter deals with Naruto's pranks. Since Naruto is known for being mischievous, it would be fun to see the babysitter trying to keep him in line. Another idea might be the babysitter teaching Naruto some new skills or values, like patience or how to cook a simple meal. Maybe the babysitter also has to protect Naruto from some small - scale threats in the village while taking care of him.
Another fanfiction concept could involve a character from 'My Babysitter's a Vampire' getting involved in the ninja world of 'Naruto'. Maybe Benny could travel to the Hidden Leaf Village. He would be really intrigued by the different jutsus and might try to learn some of them, while also introducing the idea of vampires to the ninjas. This could lead to some really interesting interactions and training sessions between the two groups of characters.
Perhaps there could be a situation where the kids get into trouble, like accidentally releasing a small animal from a cage. Naruto would then have to use his quick thinking and ninja skills to catch the animal and keep the kids safe at the same time. This would show his ability to handle unexpected situations while babysitting.
Another plot could be that the babysitter brings a new culture or way of life into the family. She could introduce unique foods, stories, or traditions that the family has never experienced before. This causes a bit of chaos at first but eventually enriches their lives in unexpected ways.
Kakashi could be an interesting babysitter. He has a lot of experience as a ninja and could teach Naruto a great deal while babysitting. He is also quite laid - back in his own way, which might be good for Naruto. Tsunade could also be considered. She is strong and could protect Naruto well. And she might be able to teach Naruto some things about leadership and responsibility while taking care of him.
One possible plot could be Naruto using his positive energy to cheer up the orphans. He might tell them his own story of growing up alone and how he overcame difficulties. This would inspire the orphans and create a warm and hopeful atmosphere in the orphanage.
One idea could be exploring the backstory of the vampire babysitter more in - depth. Maybe she has a hidden past in a different vampire clan that she's trying to keep secret from the family she babysits for.
His kindness would be a major trait. He'd be very gentle and patient with the orphans, always there to listen to their problems. For example, if an orphan is sad about not having a family, Naruto would sit with them and share his own feelings of loneliness as a child.
One idea could be a 'what if' story. What if Haku survived? They could team up with Naruto to take on new threats in the ninja world. Naruto's positive influence might change Haku's view on life even more.
A third idea could be a story centered around a tournament. Naruto, Bulma and 21 all enter a tournament for different reasons. Naruto wants to prove his strength, Bulma wants to test some of her new inventions in a combat - like situation and 21 is there because she has no choice. During the tournament, they end up having to team up against a powerful opponent and discover new things about themselves and each other.