One plot idea could be that Hermione, using her magic, ends up in the Arrowverse and meets Oliver Queen. She helps him with some of his more difficult battles using her spells and intelligence. For example, she could use a spell to disarm his enemies from a distance.
Perhaps in the fanfiction, Hermione and Oliver are from different social classes in the wizarding world. The pregnancy makes them face the prejudices and expectations of their respective backgrounds. For example, Oliver might be from a pure - blood family with certain traditions, and Hermione being a Muggle - born, they have to deal with the reactions of his family. They could also have a journey where they explore different magical parenting techniques and meet other magical families who help or hinder them in their path to becoming parents.
One plot idea could be Oliver and Sara teaming up on a dangerous mission in a new, uncharted territory. They face various challenges and in the process, their relationship deepens. Another could be a story where they have to protect a mysterious artifact that has some sort of connection to their pasts. Maybe there's a villain who also wants the artifact and they have to outwit him.
Another plot could revolve around the challenges of raising a baby in their dangerous world. They have to constantly protect the baby from their enemies. Maybe there are villains who try to kidnap the baby to get to Oliver or Felicity. So they have to set up a super - secure hideout and enlist the help of their friends like Diggle.
A really interesting plot could be that Hermione discovers a hidden prophecy that links her and Snape. In order to fulfill this prophecy, they must rule over a part of the wizarding world to bring balance. Their journey to accept this new role as king and queen is filled with challenges, like dealing with old grudges within the wizarding community and facing off against those who oppose their new - found power.
One plot idea could be that Fem Barry Allen, with her super - speed abilities, and Oliver Queen, the skilled archer, team up to take on a new threat in Star City. Maybe there's a meta - human causing chaos and they have to combine their skills, with Barry using her speed to distract while Oliver takes the shot. Another idea is that they start off as rivals, competing to see who can protect the city better, but gradually fall in love as they realize they can achieve more together. And a third plot could be that they get transported to an alternate dimension where they have to rely on each other completely to find their way back home while also facing off against versions of themselves from that dimension.
One plot idea could be that Oliver, in his yandere state, becomes overly possessive of Barry. He starts to interfere in Barry's superhero activities, believing he can protect him better. For example, he might try to stop Barry from going on dangerous missions without him. Another idea is that Oliver's yandere tendencies cause tension within the Justice League as they notice his strange behavior towards Barry. This could lead to a conflict where the League has to decide how to deal with Oliver while also protecting Barry from his over - the - top affections.
A great plot for Oliver and Company fanfiction could be that the group stumbles upon a time - traveling device. They accidentally get sent back in time to when the city was first founded. There, they meet the ancestors of the current animals in the city. Dodger has to figure out how to get them all back to their own time while also dealing with the differences in the way animals lived back then. They might also have to avoid being caught by the early settlers who don't understand that they are intelligent animals.
A possible plot is that a spell gone wrong makes Queen's music the only thing that can calm a dangerous magical creature. Hermione, being the clever witch she is, uses her love for Queen to figure out how to tame the creature and in the process, she also uncovers a long - lost magical connection between Queen's music and ancient wizarding magic.
One idea could be that they face challenges in their relationship while Laurel is pregnant. Maybe Oliver is worried about his vigilante life affecting their unborn child. Another could be that they discover some sort of mystery related to Laurel's pregnancy, like a new threat in the city that targets pregnant women. A third plot idea might be that they have to deal with family reactions to the pregnancy, some being happy and others being worried about their future.
One idea could be them facing challenges in their married life due to Oliver's vigilante duties. Maybe Felicity gets worried every time he goes out at night. Another could be them planning to start a family and all the joys and concerns that come with it. Or perhaps they take a trip together and encounter some old enemies during their journey.