A fanfiction could explore Rue's dreams and aspirations outside of the Hunger Games. Maybe she dreams of a world where all the districts are equal and there is no need for the Games. This could be shown through flashbacks or in her conversations with other tributes. It would give more depth to her character and make the readers care more about her survival.
Rue could be the key to a rebellion in a fanfiction. After her death in the original story, her spirit could inspire the other districts. So in this fanfiction, she doesn't die. Instead, she unites the tributes from different districts against the Capitol. Her small and innocent appearance could be a disguise for her strong will and leadership skills.
One interesting idea could be Rue's different strategies as the Mockingjay. Maybe she uses her small and nimble stature in ways Katniss didn't. For example, she could be more stealthy in getting in and out of dangerous areas.
If Rue won, it could lead to a very different outcome. Maybe it would inspire more rebellion or bring about a shift in the Capitol's control. It's an interesting 'what if' scenario that opens up a lot of possibilities for the story to unfold differently.
In some fanfiction, Rue could have a connection with the Capitol that is not shown in the original. Maybe she has a distant relative who is trying to help her from the inside. This relative sends her small gifts or hints during the Games that give her an edge. It would add an interesting twist to her story and show a different side of the power dynamics in the Hunger Games universe.
Obviously, Rue is one of the main characters as she is the Mockingjay in this fanfiction. There might also be characters from the original Hunger Games series who support Rue in her new role, like some of the tributes who survived and are now part of the rebellion.
In many Hunger Games fanfictions, Katniss and Rue's relationship is often one of mutual trust and sisterly affection. Katniss sees Rue as a symbol of innocence in the cruel Games. Rue, on the other hand, looks up to Katniss as a protector. Their bond is strengthened by their shared experiences in the arena.
One common theme is friendship. Fanfictions often focus on how Katniss and Rue form a deep friendship in the harsh environment of the Hunger Games. Another theme is sacrifice. Rue's selfless act in the original story can be further explored in fanfiction, like Katniss's reaction to it and how it shapes her later actions.
A possible plot for Hunger Games Halloween Fanfiction could be that the Gamemakers create a new type of muttation for Halloween. These muttations are inspired by classic Halloween monsters such as mummies or zombies. The tributes have to not only deal with the other tributes but also these terrifying new threats. Maybe there's a part of the arena that is like a 'Halloween town' where the rules of the Games are different. For example, the tributes have to solve spooky riddles to get resources. Or perhaps there's a tribute who is secretly a witch and uses magic to survive, but she has to keep her identity hidden from the other tributes and the Gamemakers.
One idea could be exploring how Annie copes with her pregnancy in the harsh post - Hunger Games world. Maybe she has to hide it from the Capitol at first, fearing they might use it against her or her loved ones. Another plot could be centered around the father's reaction, if he's still alive, and how they plan for the future of their child in a world full of danger and political unrest.
One idea could be a story that focuses on Cressida's life before she got involved in the Hunger Games. Maybe she was an aspiring artist in a different district and her journey to becoming a filmmaker in the Capitol. It could explore her relationships with her family and friends in her early days.
Peeta would be heartbroken. He had strong feelings for Katniss, so her death would be a huge blow. He might become more determined to win the Games in her memory, to carry out whatever she might have wanted in the Games.