One idea could be to cross it with a superhero universe. For example, Anya could suddenly gain real superpowers and the Forger family has to deal with that while still maintaining their cover. Twilight might have to figure out how to use Anya's powers for his missions without blowing their family facade.
If it's a crossover with a shonen anime like Naruto, Naruto himself could be an interesting addition. His boisterous personality would contrast with Loid's cool and calculated nature. And Anya would be fascinated by his ninja skills.
The clash of different worlds is the most interesting. For example, when Spy x Family crosses with a superhero universe, seeing how the non - superpowered Forgers handle the challenges in a world full of super - powered beings is exciting.
Popular Spy x Family fanfics often focus on the family relationships. They expand on the interactions between Loid, Yor, and Anya. For example, they might show how they handle a family crisis or a celebration. Also, many fanfics like to explore the hidden sides of the characters. Such as Loid's real emotions behind his spy facade, or Anya's full potential with her telepathic ability.
One great fanfic idea could be a story where Yor and Loid have to go on a mission together outside of their normal family cover. Maybe they end up in a foreign city and have to rely on each other more than ever. This would deepen their relationship and also add some exciting action and adventure elements to the story.
A really cool Spy x Family crossover fanfiction involves crossing over with 'One Piece'. Loid having to deal with pirates and devil fruits while trying to keep his family's cover intact is quite a wild concept. It often includes some really creative action scenes and comical moments as Anya tries to understand the strange new world of One Piece.
The potential for different storylines. The Spy x Family setting gives a lot of room for creativity. Fanfic writers can create all sorts of scenarios for Loid and Yor, from dangerous spy - assassin missions that test their relationship to simple, domestic moments that show their growing bond. There are also the added elements of Anya and the overall comical yet tense world they live in, which can be incorporated in unique ways in fanfics.
There could be a fanfic where Loid accidentally discovers that Yor is extremely ticklish. This could lead to some really funny and endearing moments between them as they try to keep it a secret from Anya. In this type of fanfic, the author might play with the idea of how the two adults handle this newfound knowledge in the context of their pretend family situation.
You can try looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of fan - created works, and there's a good chance you'll find Spy x Family tickle fanfics there.
One way is to fully immerse yourself in the unique storylines that fanfic writers create. Look for fanfics that expand on the relationships between the characters, like Loid, Yor, and Anya. Another good way is to join online communities where fans discuss their favorite Spy x Family fanfics. This way, you can discover new and interesting ones that you might not have found on your own.