A really cool 'Waking Up' Twilight fanfiction could involve the Volturi waking up to a world where their power is being challenged in a new way. Maybe a new breed of supernatural beings has emerged, and they have to deal with this unexpected situation while also maintaining their control over the vampire world.
One interesting plot could be the main character discovering they have unique powers upon waking up in twilight. Maybe they can communicate with twilight creatures that are invisible to others. Another plot might involve the character trying to find their way back home from this twilight realm, facing various challenges and making new friends along the way.
One 'waking up as a girl' story could be about a boy who wakes up in a girl's body after a strange dream or magic spell. He then has to navigate the day, dealing with different clothing styles and social expectations. For example, he might struggle to put on a dress properly at first.
Perhaps she wakes up in a small town in Twilight. She soon discovers that she is being hunted by the Volturi because they think she has some special ability that could disrupt their order. She teams up with the Cullens to try and protect herself and figure out what's going on with her.
Fanfiction.net is also a good place to search. There are a lot of Twilight fanfictions there. Just type in 'Waking Up' Twilight in the search bar, and it should show you relevant stories. However, the quality may vary, so you might need to read a few to find the good ones.
Often, the main character is an ordinary person who is suddenly thrust into the twilight world. They are usually confused at first, trying to make sense of their new surroundings. There might also be a wise old guide figure, like an ancient spirit of the twilight, who helps the main character navigate the strange world.
One interesting Twilight Phoenixfyre fanfiction could be about a new adventure where Phoenixfyre discovers a hidden power within the Twilight world. It might involve her facing challenges that no one has ever seen before.
One interesting Bellward Twilight fanfiction could be about Bellward's backstory before the events in Twilight. It might explore their family history, their early experiences with the vampire world, and how they became the characters we know in the original story.
One interesting Edward Twilight fanfiction could be about Edward having a different kind of power. For example, instead of just reading minds, he can also communicate with animals. This would add a whole new layer to his character and the stories within the Twilight universe. Another could be a story where Edward travels back in time and meets a younger version of Bella, changing the course of their relationship in unexpected ways. And there might be a fanfiction that focuses on Edward's life before he met Bella, exploring his relationships with his vampire family members in more depth.
Some 'Twilight' fanfictions that are worth reading are the ones that blend different mythologies. For instance, combining the vampire and werewolf lore of 'Twilight' with Greek mythology. Picture a story where the vampires have some connection to the gods or the werewolves are descendants of a Greek monster. It adds a whole new layer of complexity and intrigue to the familiar 'Twilight' story.
One interesting Awaken Twilight fanfiction could be one that explores the backstory of a minor character in the original. For example, a story about a vampire who was turned long before the main characters came into the picture. It could delve into their human life, how they were turned, and what they've been doing in the Twilight world all this time.