One idea could be exploring a new character who discovers a hidden power within the rings that was previously unknown. This could lead to a whole new adventure and conflict within the fanfiction world.
Give the character real - life - like flaws. A character who is too perfect isn't believable. So, if your character is a powerful ring - bearer, they could have a fear of heights which is a hindrance in some situations. Also, let their actions be consistent with their personality. If they are a kind - hearted person, they won't suddenly start acting cruel without a good reason, especially when it comes to using the power of the rings.
One common theme is the exploration of power. Since the series is about the Rings of Power, many fanfictions dig deeper into how power corrupts or is used for good. Another theme is the relationships between different races like elves, dwarves, and humans. For example, some fanfictions focus on the tensions and alliances between them.
You could write a fanfiction focusing on the relationship between different races in 'The Rings of Power'. For instance, how elves and humans interacted beyond what was shown in the series. What if there were secret alliances or romances between them? Also, a fanfiction about the magic in the world of 'The Rings of Power' could be really cool. You could expand on how the magic works, create new spells, or explore the limitations of the existing magic system.
The back story of 'Rings of Power' is set in Middle - earth long before the events of 'The Lord of the Rings'. It delves into the forging of the Rings of Power, which were created by the Elven - smiths with the guidance of Sauron, who was initially disguised. The story shows how different races in Middle - earth, like the Elves, Dwarves, and Men, became involved in the events related to these powerful rings. This led to the rise of Sauron's power and the long - standing conflicts that would shape the future of Middle - earth.
A really interesting 'rings of power fanfic' could be 'Galadriel's Quest'. In this fic, the author delves deeper into Galadriel's character, her motives and her journey in a way that the original might not have fully explored. It's full of vivid descriptions and emotional moments that make it a great read. For example, the way the author describes Galadriel's internal struggles when faced with difficult decisions is both captivating and thought - provoking.
Yes, it can be considered fan fiction. It takes elements from J.R.R. Tolkien's works and expands on them in a way that some view as more in the realm of fan - created content. It has a lot of creative liberties that deviate from the original lore in ways that make it seem like fan fiction.