One idea could be to explore the backstories of the minor characters more in - depth. For example, give more details about the lives of the employees at Cognito Inc. before they joined the company.
Another idea is to create an alternate universe where the main characters have different roles or abilities. Maybe Reagan has the power of mind - reading and how that would change the dynamics within the company.
You could also write a fanfic centered around a heist within Cognito Inc. itself. A group of employees, disgruntled with the management, plan to steal some top - secret technology and the chaos that ensues.
There might be a fanfiction where Reagan has to deal with a personal crisis while still handling the chaos at Cognito Inc. This could explore her character in more depth, showing her vulnerability and strength at the same time. Maybe she has to make a difficult choice between her loyalty to the company and her own moral compass.
One idea could be that the 'inside man' is a vampire who has infiltrated the human world in the Twilight universe for a secret mission. Maybe he's trying to find a way to end the conflict between vampires and werewolves without the knowledge of either side.
One idea could be that Harry discovers a long - lost vault that contains a powerful and dangerous magical artifact. He has to figure out how to deal with it without causing chaos in the wizarding world. Another is that he uncovers a conspiracy among some of the Gringotts employees to steal from the vaults of important wizarding families.
A great plot idea could be the emotions trying to deal with Riley's new hobby. For example, if she decides to take up painting, the emotions might have different reactions. Joy would be excited and try to make the most of it, while Fear might be worried about Riley not being good at it and getting disappointed. This can lead to a lot of comical and heartwarming interactions among the emotions without any sexual elements.
One idea could be creating an OC who is a new emotion in Riley's mind. For example, an emotion of 'Wonder' that gets activated whenever Riley experiences something truly amazing. This OC could interact with the existing emotions, like Joy being both excited and a bit jealous of this new emotion's unique role.
Begin by creating your own unique character or adding a new element to the existing Cognito Inc. world. This could be a new department or a strange new technology. After that, start writing down how this new addition interacts with the main characters. For instance, if it's a new technology, how does Reagan react to it? Does she want to study it or is she suspicious? You can build your story from there.
A possible plot is that the control panel in Riley's mind gets a malfunction, and the emotions have to work together in a completely new way. They might have to swap their usual functions, so Sadness has to take on the role of Joy for a while. This could lead to some really strange behaviors from Riley on the outside. Also, what if an outside force, like a dream character, tries to invade the inside world of Riley's emotions and disrupt their harmony?
One idea could be exploring a different origin for the vampires in the Twilight universe within the fanfiction. Maybe they were created as a result of a scientific experiment gone wrong instead of the traditional vampire lore.
One idea could be that the main character starts seeing the ghosts of the vampires' past victims within the Twilight world. These ghosts could be trying to warn the character about some hidden danger related to the vampire clans. Another could be a haunted location in Forks, like an old mansion, that has a connection to the werewolves' history, and the characters have to uncover the mystery.
Well, in '1984 fanfic', one interesting idea could be exploring different endings. Maybe the main character manages to overthrow the totalitarian regime in a way not shown in the original. Another could be delving deeper into the relationships between characters that were only hinted at in '1984'. For example, the relationship between Winston and Julia could be explored further, like what if they had a chance to start a real family in a post - Big Brother world.