Foxes are quite common. Given Naruto's connection with the Nine - Tailed Fox, it makes sense that in fanfiction, he might be able to control other foxes. They can be used for scouting or as distractions in battles.
Crows are also often seen. Crows are intelligent and can be used for spying or sending messages. Naruto in fanfiction might control them to gather intelligence on his enemies. And they can be very stealthy, flying around unnoticed most of the time.
Well, it can change the flow of battles a great deal. For example, in some fanfictions, Naruto can use his animal - controlling ability to summon a horde of powerful animals to fight against enemies. This gives him an edge in combat and can turn the tide of a losing battle.
One way could be through telepathy. In fanfiction, Harry might be able to directly communicate with the minds of animals and tell them what to do. For example, he could tell a group of birds to fly in a certain pattern to create a distraction.
One idea could be that Naruto gains some new power or jutsu that allows him to control Anko's actions in a non - malicious way. Maybe it's a form of genjutsu that he accidentally uses on her during a training session, and then has to figure out how to reverse it.
In a 'Naruto controls snow' fanfiction, it could be that Naruto is cursed by an enemy. As a result, his chakra is somehow linked to snow. At first, he struggles to control this new power, but with the help of his friends and some intense training, he masters the ability to control snow and turns it into a powerful weapon against his foes.
In the fanfiction where Naruto controls the Tesseract, it could change the power dynamics completely. Naruto is already a powerful ninja, but with the Tesseract, he could become near - invincible. He might be able to use the Tesseract's space - bending abilities to surprise his enemies in battle. For example, he could suddenly appear right in front of them or make them disappear into another dimension. Also, he could potentially use it to heal wounds or revive the dead, if he discovers all of its powers, which would make him not just a hero in his own world but maybe in the entire multiverse of the fanfiction.
In a more comical fanfiction, Naruto might accidentally control Anko's eating habits. Let's say he uses a new jutsu that backfires and instead of affecting an enemy, it affects Anko. So, every time Naruto thinks about a certain food, Anko starts craving it and can't resist. This would lead to some really funny situations as Anko tries to fight against this strange control while Naruto is desperately trying to figure out how to undo the jutsu.
The exploration of their relationship is also important. It could be a romantic relationship where Hinata's control adds a new layer of depth. Maybe she controls Naruto in a way that helps him understand his feelings for her better. Or it could be a platonic relationship where she helps him grow as a ninja by controlling certain aspects of his training or decision - making process. In many cases, it shows how Hinata's influence can be a positive force for Naruto.
In 'naruto controls the darkness' fanfiction, it could also be that Naruto is exposed to a dark energy source accidentally. This energy starts to influence his thoughts and actions in negative ways at first. But being Naruto, he doesn't give in. He uses his strong willpower and the positive relationships he has with his friends like Sasuke, Sakura, and others to find a way to control this new dark power. He might have to face some of his own demons from his past, like the loneliness he felt as a child or the times he failed to protect his friends, and use these experiences to better understand and control the darkness within him.