Another interesting plot could be a time - travel scenario. Thomas travels back in time to Stiles' world. He has to keep his identity a secret while also trying to prevent a future disaster that he knows is going to happen. Stiles, being the curious and observant person he is, starts to suspect that Thomas is not from around there. They form an unlikely friendship as they work together to change the future.
A different plot could be that Stiles gets transported into Thomas' world. He initially struggles to adapt but then realizes he has some knowledge that can help Thomas and his group. For instance, Stiles might know about a certain type of creature or magic that exists in his world but is also starting to appear in Thomas' world. So, he helps them fight against this new threat while also trying to find a way back home.
You can try fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. These platforms usually have a large collection of fanfictions, and you can search for 'Stiles meets Thomas' specifically. Just use the search bar on the site, and it should bring up relevant stories.
Well, a really popular Stiles is Thomas fanfiction is 'Inseparable'. It has a great plot where they face various challenges together and their bond only grows stronger. 'Stiles - Thomas Alliance' is also good. It shows how they form an alliance in a difficult situation and how that changes their lives. And 'Thomas and Stiles: The Beginning' which is all about how their relationship started.
One plot could be that Peter is a vampire and he wants Stiles because Stiles has a special blood type that can save Peter from a curse. So Peter has to protect Stiles while also trying to convince him to help.
One common plot is where Derek has to protect Stiles from some supernatural threat. For example, a new and powerful werewolf pack comes to town and Derek is determined to keep Stiles safe because he has a hidden, deep - seated affection for him.
One plot could be that Stiles finds the wolf cubs in the forest while he's out exploring. He decides to take them in and protect them from the hunters in the area. As he takes care of them, he discovers that they have some special powers that are connected to an ancient legend in the Teen Wolf universe.
Stiles is the key character here. He's the one through whose perspective we usually experience the story. In the pack, Scott is a must - he's the werewolf who has a long - standing friendship with Stiles. Derek, with his alpha - like presence, also plays a major role. Additionally, characters like Allison, who has her own arc related to the supernatural world, could be part of the main cast as well. They all interact with Stiles in different ways when he meets the pack.
In this fanfiction, Stiles might initially be in awe of the Cullens' beauty and grace. Maybe he'll be a bit intimidated by their vampiric nature at first. For example, he could be shocked by their superhuman speed or strength when he first witnesses it.
There could also be other characters from either Stiles' world or the Winchesters' world that make appearances. For example, in Stiles' world, there might be his friends like Scott who could be mentioned or even play a small part in the story. And from the Winchesters' side, characters like Castiel could potentially show up and interact with Stiles in some really interesting ways.
The main characters are Stiles and the Cullens. Stiles is known for his ability to adapt in strange situations. When he meets the Cullens, their interactions will be centered around how they deal with each other's differences. The Cullens' vampiric abilities and Stiles' human (or whatever he is in his original context) nature will play a big part in their relationships in the fanfiction.
One possible plot could be that Stiles is turned into a threat against his will, and Chris, in order to protect others, has no choice but to shoot him. Maybe Stiles is possessed by a dark force.