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.
You could also have a plot where the emotions discover a new 'island' in Riley's mind. Maybe it's an 'Imagination Island 2.0' where all the things Riley has dreamed about recently are stored. But there are some glitches and problems on this new island, like some of the dreams are starting to fade or get mixed up. The emotions have to work together to fix it, and this journey can be filled with a lot of interesting character development and exploration of Riley's subconscious, without any inappropriate content.
Another idea is that the emotions get accidentally swapped between Riley and one of her parents. So the parent starts acting like Riley and vice versa. The 'Inside Out' crew in Riley's mind then has to figure out how to reverse the situation. It could involve a lot of chaos and confusion as they navigate through the different memories and personality traits of both Riley and her parent, all while keeping it clean and family - friendly.
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 a time - travel plot where some of the Avengers are sent back in time to the world of Harry Potter. They have to blend in, learn about magic, and help the young wizards defeat Voldemort before he becomes too powerful. Another could be a story where the magic from Harry Potter starts seeping into the Marvel universe, causing chaos. The Avengers then have to team up with Harry Potter characters who have also been transported to their world to reverse the magic spill and restore order.
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 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.
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.
I'm not sure there are a large number of 'Inside Out' non - sexual fanfics specifically. But you could start by looking on fanfic platforms like Archive of Our Own. Just search for 'Inside Out' and then filter through the results to find the ones that focus on the positive aspects of the movie like the emotions' relationships, their adventures in Riley's mind without any sexual undertones.
One idea could be a story where Sakura discovers an ancient scroll left by Tobirama. As she deciphers it, she gets insights into his way of thinking and ninja techniques. This could lead to her developing new skills and also feeling a connection to Tobirama across time. She might then use what she's learned to help her friends in a difficult situation.
One idea could be that Nathan and Haley start a music project together. They could write songs inspired by their relationship and the ups and downs they've faced. It would be a great way to show their connection through the power of music.
One idea could be that Percy and Calypso join forces to rescue a magical creature that is crucial to the balance of the mythological world. They could embark on a journey filled with challenges like navigating through dangerous enchanted forests and solving riddles left by ancient gods.
Another plot could be about Malia learning more about her human side with Scott's help. Scott could introduce her to normal teenage experiences like going to school dances or studying for exams. This would be a great opportunity for character growth for Malia and also show their friendship as Scott patiently guides her through these new experiences.