One interesting aang hair fanfiction could be about Aang using his hair in a unique way during a battle. Maybe his long hair gets caught in the wind and he uses it as a distraction for his opponents. For example, he could swirl his hair around to create an illusion of multiple attackers, catching the enemy off - guard.
In some aang hair fanfiction, his hair could be the center of a cultural story. Since Aang is an Air Nomad, his long hair is part of their tradition. A fanfiction could explore how his hair is seen by other cultures in the Avatar world. For instance, the Water Tribes might have a different view on his hair compared to the Earth Kingdom. It could be a story about acceptance and understanding of different cultural norms related to appearance.
There might be a fanfiction where Aang's hair has some special power. Like it can glow in the presence of certain spirits. This could lead to adventures where he has to explore different spirit - rich areas to understand more about this power in his hair. And it could also be a connection to his past lives, as his hair is something that has been with him through all his reincarnations.
One common theme could be self - discovery. Aang having hair might be seen as a new part of his identity, and fanfictions could explore how he comes to terms with this change. For example, he might have to deal with how others perceive him differently.
Well, another place to look for aang with hair fanfiction could be Archive of Our Own (AO3). It has a vast collection of fan - created works. You might find some interesting takes on Aang with hair, perhaps some that focus on his character development with this new physical aspect added to his appearance.
In some fanfictions, Aang's energybending could be explored in a more character - development - centered way. For instance, after a difficult battle, Aang realizes that his energybending has a connection to his inner peace. He then goes on a journey to better understand this connection and in the process, becomes an even more powerful and wise Avatar. He might learn that by maintaining a perfect balance within himself, his energybending can reach new heights and he can use it to heal not only physical wounds but also emotional and spiritual ones of those around him.
One interesting Katara and Aang fanfiction could be about their adventures after the end of the original series. Maybe they travel to new lands and discover new bending techniques together. Another could be a story that focuses on their relationship development during a time when the Fire Nation is trying to make a comeback. There are also fanfictions that might explore an alternate universe where Katara and Aang meet in different circumstances, like if Katara was from the Fire Nation and Aang was from the Water Tribe.
One interesting 'Aang puberty fanfiction' could be about Aang struggling to control his newfound strength during puberty while also dealing with his Avatar duties. For example, he might accidentally cause a stronger gust of wind due to hormonal changes affecting his bending.
One interesting Dark Avatar Aang fanfiction could be where he uses his newfound dark powers to challenge the traditional order of the Four Nations. Maybe he decides that the old ways are holding the world back and tries to reshape it in a more radical way.
There could be a fanfiction where Katara discovers she's pregnant during a journey. They then have to cut their adventure short and return to a more stable place. Along the way, Aang uses his airbending to keep Katara comfortable during the pregnancy, like creating gentle breezes to cool her when she's feeling hot. This would show their love and care for each other during this special time.
One interesting story could be that Aang and Katara meet in a different time period, like in a modern world. They have to adapt to new technologies while still maintaining their connection. Aang might be fascinated by things like cars and airplanes, and Katara could be intrigued by modern medicine.
I'm not really into that kind of fanfiction. However, some popular fanfiction platforms like Archive of Our Own might have such stories. You can search there using the tags 'korra' and 'aang' to find relevant works.
One interesting Snape hair fanfiction could be about how his hair has a magical property. For example, it might be able to sense danger and change color accordingly. In some stories, his hair could be a key element in a mystery where students try to figure out the secrets it holds.