There are many possibilities. For instance, a fanfic could focus on Dipper and Mabel starting a club together in Gravity Falls, like a mystery book club or a club for exploring the supernatural in a scientific way. They could also be in a story where they swap personalities for a day and have to deal with the consequences. Or they could be in a fanfic where they are on a quest to find a long - lost family heirloom that has special powers, all while maintaining their strong sibling bond and not having any romantic relationship.
Another non - sexual plot could be that they are both on a quest to find a lost magical item. This item has the power to grant wishes, but it's been hidden away. They start as strangers but gradually become friends as they follow the clues. Along the way, they have to deal with various antagonists who also want the item for their own malicious purposes.
A popular one is 'Dipper and Mabel's Secret Quest'. This fanfic focuses on a secret mission that only Dipper and Mabel are aware of. It delves deep into their relationship as siblings and how they support each other through tough situations.
Maybe the fanfic could start with Mabel finding a lemon - shaped amulet. When Dipper touches it, they get transported to a parallel Gravity Falls where everything is lemon - themed. They have to find a way back while dealing with the wacky versions of the townspeople. This would allow for a lot of creative scenarios and character interactions.
One idea could be a story where Baby Dipper discovers a magical creature in the forest and Mabel helps him keep it a secret from the adults. They go on adventures to find food for the creature and learn about its magical abilities.
One great 'dipper x mabel fanfic' is 'The Twin Bond'. It really delves into their unique relationship and how they support each other through various adventures. Another one could be 'Dipper and Mabel's Shared Journeys' which shows their growth together in the Gravity Falls world. There's also 'The Sibling Saga' that focuses on their special bond and the things they do for one another.
There's a fanfic that focuses on Dipper and Mabel's discovery of a lemon - themed mystery. In this 'Dipper Mabel Lemon Fanfic', the lemon is actually a key to an ancient mystery in Gravity Falls. They have to solve puzzles and face off against strange creatures to unlock the secrets. It's full of action and the unique charm of the show.
One idea could be that Reverse Dipper, who might have different characteristics in this reversed world, meets Mabel and they initially have a misunderstanding because of their different ways of thinking. Maybe Reverse Dipper is more cautious while Mabel is her usual exuberant self. They could go on an adventure where Mabel tries to teach Reverse Dipper how to have more fun and let loose.
One idea could be a story where baby Dipper and Mabel discover a magical creature in the woods near their home in Gravity Falls. The creature is lost and they decide to help it find its way back. Another could be a fanfic about their first day at daycare in Gravity Falls and all the strange things that happen there. Maybe they meet other kids with unique abilities or find a secret part of the daycare.
I'm not entirely sure as it could be a very dark or disturbing concept. 'Dipper' and 'Mabel' are characters, and 'kill fanfic' might imply a fan - created story where something bad, like a killing, occurs involving them. However, this goes against the generally positive and family - friendly nature of their original source.
They could start by sharing their love for lemons. Maybe they discover a new lemon - based dessert in town and bond over trying it. This simple shared interest can be the starting point for deeper conversations and understanding between them.