One interesting concept could be alternate universes where the slendytubbies have different powers or characteristics. For example, they might be able to communicate with humans in a friendly way instead of being menacing.
Another concept could be the origin stories in slendytubbies fanfiction. Maybe exploring how they became the creepy entities they are. It could involve some kind of scientific experiment gone wrong or a curse placed upon the original Teletubbies.
Well, a plot could involve Tinky Winky being chased by one of the threats in the Walten world, like a possessed animatronic. Tinky Winky's unique appearance and abilities from the Slendytubbies world might be both a hindrance and a help in this situation. He could use his antenna to sense danger in a different way than the Walten characters are used to. Or perhaps there is a fanfiction where the two worlds are merging, and Tinky Winky has to find a way to stop it before both worlds are destroyed. He might have to enlist the help of some of the more intelligent characters in the Walten world to figure out a solution.
In the backrooms fanfiction, the concept of the 'safe rooms' is really cool. These are areas within the backrooms where the entities don't seem to go or where the environment is a bit more stable. It gives the characters a brief respite from the constant danger and allows for some interesting plot developments as they plan their next moves.
One interesting concept is exploring different cursed techniques for the characters. For example, in some JJK fanfictions, Yuuji might have a cursed technique that allows him to communicate with the souls of the dead in a more detailed way. Another concept could be alternate universes where the characters have different relationships or roles. In some fanfictions, Megumi could be the main villain instead of an ally, which completely changes the dynamic of the story.
One interesting concept could be new micro - games. For example, a fanfiction might introduce a micro - game where the character has to dodge falling musical notes in a rhythm - based challenge. This would add a new and unique gameplay element to the Warioware universe.
One interesting concept could be alternate universes where the Planeswalkers have different alignments or abilities. For example, a fanfiction might explore a world where Jace Beleren is a villain instead of a hero. Another concept could be the exploration of the backstories of minor characters in the MTG lore. In some fanfictions, these characters are given more depth and their own story arcs that are not fully explored in the official lore. Also, there are fanfictions that focus on the relationships between different races in the MTG universe, like how elves and humans interact in a more detailed and unique way compared to the official stories.
Some interesting concepts in MJ fanfiction are those that re - imagine his concerts. For example, a fanfiction could describe a concert where he uses holographic technology in a way that was never possible during his lifetime. There are also concepts like exploring his family life in a more fictional and detailed way, showing his interactions with his siblings and parents in made - up scenarios that give new perspectives on his personal life.
One interesting concept could be exploring different character backstories that were not fully developed in the original. For example, delving deeper into a minor character's family history and how it ties into the overall bloodline theme. Another could be imagining alternate bloodline inheritances that change the power dynamics in the story.
The idea of the entities is also captivating. These are often otherworldly creatures that inhabit the backrooms. They can range from human - like but distorted figures to completely unrecognizable and terrifying beings. Their behavior and how they interact with the 'explorers' in the fanfiction add a lot of suspense.
One interesting concept could be the exploration of different cybernetic enhancements. In some Edgerunners fanfiction, characters might get unique and untested enhancements that give them new abilities. For example, a fanfic could feature a character with a cybernetic eye that can not only see in different spectra like infrared and ultraviolet but also hack into security systems just by looking at them.
One interesting concept could be exploring the moral dilemmas that characters face during the purge. For example, a character might have to decide whether to save a stranger or protect their own family. Another concept could be how different social classes experience the purge. The rich might have more resources to protect themselves, while the poor are more vulnerable.