Perhaps Hiccup has the power to transform into a dragon himself. He could be a half - human, half - dragon hybrid. This would give him the ability to fly faster and fight more effectively against enemies. He would have to hide this power from most of the people on Berk at first because they might not understand. As he learns to control this transformation, he discovers new aspects of the dragon world and his place in it. This power could also bring some internal conflict as he struggles with his human and dragon sides.
A fanfiction could center around Hiccup and Toothless time - traveling. They end up in a different era where dragons are feared even more than in their own time. They have to find a way to get back home while also trying to change the perception of dragons in this new time period. This would involve a lot of challenges as they would be in an unfamiliar world with different rules and beliefs.
One idea could be that Percy discovers his ice powers during a dangerous mission. Maybe he's in a really hot and hostile environment, like a volcanic area, and suddenly his ice powers emerge to cool things down and save his friends. Another could be that he has to train with an ancient ice spirit to control his new powers. The spirit could be really strict and Percy has to learn discipline along with mastering his ice abilities.
One creative idea could be exploring how their relationship develops in a world full of magic and adventure. Maybe they bond over a shared quest to save their dragon - human community from a common threat. Their mating could be more about a spiritual or emotional connection that is formed through these experiences.
One idea could be a story where a young taekwondo athlete has lost their passion for the sport due to a serious injury. But through a series of encounters with an old master who teaches them a new, more spiritual side of taekwondo, they experience a renewal of their love for it. They then start training in a different way, focusing more on the mental aspects, and eventually make a comeback in the sport.
One idea could be a story where a young trainer discovers a rare and mysterious Pokemon that has the power to control time. The trainer then has to protect this Pokemon from an evil organization that wants to use its power for their own gain.
For a 'Rapunzel pregnant fanfiction', consider this. Rapunzel and Flynn are traveling when she starts showing signs of pregnancy. They stop in a small village where the people are not very accepting of a pregnant unmarried woman at first. Rapunzel has to use her charm and kindness to win them over. Meanwhile, she has strange dreams about the baby's future. Is the baby going to inherit her long hair? Or will it have some other magical ability? She spends her days making a safe and warm place for the baby to be born while Flynn goes out to gather supplies and ensure their safety.
One idea could be Enola solving a mystery related to a long - lost family heirloom. Maybe the heirloom has some secret power or message that could change the fate of her family. Another plot could involve Enola teaming up with a group of female activists in Victorian England, and together they solve a mystery that is somehow linked to the women's rights movement.
Maybe a story where Barbie is a journalist assigned to do a story on Oppenheimer. She starts out seeing him as just a brilliant but somewhat intimidating scientist. But as she delves deeper into his life and work, she discovers his humanity. Meanwhile, Oppenheimer is initially dismissive of Barbie but then comes to respect her tenacity and unique perspective. This could lead to a story of mutual understanding and friendship that crosses the boundaries of their very different worlds.
One plot idea could be that Hermione discovers her ice powers during a dangerous adventure in a frozen tundra. She has to learn to control them quickly to save her friends from an ice - bound monster. Another could be that she uses her ice powers to create a magical ice fortress to protect Hogwarts from an impending dark magic attack. Or perhaps she is the only one with ice powers in a world where everyone else has fire - based magic, and she has to face discrimination until she proves the value of her unique powers.
A possible plot is that there is a magical event that switches the minds of Stoick and Baby Hiccup. So Stoick has to figure out how to take care of himself as a baby while Hiccup, in Stoick's body, has to deal with the responsibilities of being the chief. It would be full of comical and heartwarming moments as they both learn about each other in a very different way.