Well, it's likely that there are 'human foxy x bonnie fanfic' available. A lot of fanfic writers like to explore different character relationships and interpretations. You could also look into related fanfic communities on social media platforms. Sometimes, fans will post links or recommendations for fanfics that involve this pairing. Just be aware that the quality can vary widely from one fanfic to another.
Another theme is adventure. Fanfic writers like to take them out of their usual pizzeria setting and send them on exciting adventures. This could be exploring new areas in the FNAF world or even going to places outside of it. It gives the characters a chance to grow and develop in different situations.
Common themes in 'toy bonnie x foxy fanfic' often include cooperation. Since they are both characters in the same universe, they may team up to face challenges. Also, discovery can be a theme, like they discover new things about each other or their world together. It's also possible that there are themes of rivalry that turn into respect over time.
You can try fanfic websites like Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms, and you're likely to find some good 'foxy x bonnie fanfic' there. Another option is FanFiction.net.
One popular 'foxy x bonnie fanfic' is 'The Adventures of Foxy and Bonnie'. It has an interesting plot where they team up to solve mysteries in their world. Another one could be 'Foxy and Bonnie: An Unlikely Friendship' which focuses on how their friendship develops despite their differences.
The settings in foxy x bonnie fanfiction also vary. It could be set in the familiar, spooky pizzeria we know from the game, or the author might take them to new, uncharted areas. In 'Foxy and Bonnie's New World', they are transported to a strange, magical land and have to adapt while still maintaining their unique bond. This exploration of different settings and relationships is what makes this type of fanfiction so interesting.
There's also a fanfic called 'Foxy and Toy Bonnie: An Unlikely Alliance'. In this one, they team up to face a common threat in the pizzeria. It delves deep into their personalities, showing how their differences can actually work in their favor when they cooperate. It's a great read if you like stories about characters coming together in unexpected ways.
Some 'bonnie x foxy fanfic' are centered around their friendship. For example, a story could be about how Bonnie helps Foxy overcome his fear of a certain part of their environment. The fanfic writers use their creativity to build on the basic characters and create engaging narratives.
I'm not sure about a specific 'toy bonnie x foxy fanfic' to recommend. You could try searching on fanfiction websites like Archive of Our Own. There might be some interesting stories there.