Well, it could be that Caleb planned a really elaborate homecoming proposal at high school. Maybe he decorated the school hallway with balloons and flowers leading to a big sign that said 'Homecoming with me?'. Then he got his friends to sing a song as he walked his crush to the sign and asked her to be his date for homecoming.
Perhaps the uniqueness of Caleb's homecoming proposal was the location. He could have chosen a really unexpected place in the high school like the rooftop or the old abandoned part of the school that has been renovated into a little garden. This would make the proposal stand out from the typical cafeteria or hallway proposals.
Perhaps in a fanfiction, Venom is actually a creation of one of the villains in Homecoming who wants to use it to defeat Spider - Man. But the symbiote has a mind of its own and instead starts to have an odd connection with Spider - Man, leading to a complex relationship where they have to figure out if they can trust each other.
Perhaps in the fanfiction, there is a plot where a powerful enemy is targeting young superheroes. Peter and Wanda find out about this and decide to form an alliance. They start training together to improve their skills. Peter learns how to be more strategic from Wanda, and Wanda learns about Peter's quick - thinking and adaptability. Their combined efforts lead to some epic battles against the enemy.
In a fanfiction, Spider - Man could get lost in an alternate dimension during a mission. The Avengers then have to find a way to bring him back. While in the alternate dimension, Spider - Man meets different versions of the Avengers and has to fight his way through various challenges to return home.
One idea could be that during the field trip, Peter discovers some strange anomaly. Liz is intrigued and Allan is a bit skeptical. They then get separated from the group while investigating it. Peter uses his skills (if he has special skills in your fanfic concept) to try and find a way back to safety while also protecting Liz and Allan.
Maybe the Venom symbiote could find its way into the Harry Potter universe and attach itself to a wizard. This wizard would then have to struggle with the dark and aggressive nature of the symbiote while also dealing with the magical world's rules and expectations. Harry Potter and his friends would have to figure out how to separate the wizard from the symbiote without using traditional Muggle technology.
Well, you could write a fanfiction where Peter Parker has to team up with a villain from a different universe who is also trying to get back home. They form an unlikely alliance and during their journey, Peter learns more about the multiverse and his own powers. It would be full of action and character development.
Well, a possible plot for a Spider - Man Homecoming time travel fanfiction could involve Peter traveling to the future. He sees a desolate New York City, which has been taken over by a powerful new villain. He then has to find a way to bring this knowledge back to his own time and prevent this future from happening. This would involve him using his skills and intelligence to figure out how to change the course of events.
One idea could be that Spider - Man finds himself magically transported to the wizarding world of Harry Potter. He could use his web - slinging skills in Hogwarts, perhaps to help catch the Golden Snitch during a Quidditch match in a very unorthodox way. The Hogwarts students would be both amazed and a bit confused by this strange new hero in their midst.