What are some interesting Phineas and Ferb fanfiction stories?

One idea could be to explore what happens when Phineas and Ferb build a time - traveling device. They could go back in time and meet their parents when they were kids. Another idea is a story where Perry the Platypus has to team up with Doofenshmirtz's daughter Vanessa to save the day. Maybe they discover a new villain who is more powerful than Doofenshmirtz and they have to put aside their differences to stop this new threat.

One idea could be Phineas and Ferb building a time - traveling roller coaster that takes them to different eras in their town's history. They could meet their ancestors and see how things were built and developed. Another plot could be that Doofenshmirtz creates an invention that accidentally swaps the personalities of all the characters. So Phineas becomes super - serious and Ferb becomes overly enthusiastic. It would be really funny to see how they deal with their new personalities while still trying to complete their daily big builds.

One idea could be a crossover with 'Kim Possible'. Phineas and Ferb could use their inventive skills to help Kim in one of her missions against Dr. Drakken. Maybe they create some high - tech gadgets for her. Another idea is a crossover with 'The Simpsons'. The boys could visit Springfield and get involved in some wacky adventures with Homer and Bart. They might even build an amazing contraption in the Simpsons' backyard.

In Phineas and Ferb Avengers fanfiction, a common crossover idea is the Avengers being called to the Phineas and Ferb universe because of some sort of energy anomaly. This anomaly could be caused by one of Doofenshmirtz's inventions gone wrong. Hawkeye might find himself in a strange situation where he has to use his archery skills in the wacky world of Phineas and Ferb. Hulk could be both a source of amazement and a bit of a problem as his large size might accidentally destroy some of the boys' projects. The crossovers often play with the differences in the two universes' rules and characters' personalities to create unique and fun stories.

The OC could be a time - traveler from the future. She comes back to the present to stop an event that will have a negative impact on the future. Phineas, being the curious and adventurous type, joins her on this mission. They use their combined creativity and Ferb's logical thinking to solve the mystery and prevent the disaster.

One interesting plotline could be how Phineas and Ferb deal with the aftermath of getting busted. Maybe they have to find a way to convince their parents that their wild inventions were actually for a good cause. Another could be that their friends rally around them to help prove their innocence.

One idea could be Perry having to navigate the human world while still trying to keep his secret agent identity hidden from Phineas and Ferb. He could end up getting a regular job as a human and have all sorts of comical misunderstandings at work.

Honestly, I haven't come across many 'Phineas and Ferb' pregnant fanfiction myself. It could be that most fans focus more on the original adventures and the wacky inventions of Phineas and Ferb. But if you're interested in this type of fanfiction, you can also try reaching out to other fans on social media platforms dedicated to the show. They might be able to point you in the right direction or even share their own creations if they have any.

One popular story could be about Phineas and Isabella finally having their first kiss in a really romantic setting, like during a special event in the Tri - State Area. Maybe it's at a big fair they all go to, and there are fireworks in the background as they share that moment.

One popular type might be those that explore the characters' future careers. For example, fanfictions where Phineas becomes a world - renowned inventor and Ferb is his business partner. Another could be stories that focus on their relationships with other characters from the show as they grow older. However, it's important to note that when it comes to fanfiction, there is a wide variety and different people have different preferences.