In this fanfiction, Harry could be on a quest in Wonderland to find a magical object that can defeat a new dark force in the wizarding world. He encounters various Wonderland creatures like the Queen of Hearts, who at first is hostile but later helps him when she realizes the threat is also to Wonderland.
One idea could be Harry finding a hidden portal in Hogwarts that leads him to Wonderland. There, he meets the Cheshire Cat who helps him understand some of the mysteries of the wizarding world in a different way. Maybe he has to solve Wonderland - like riddles to get back to Hogwarts.
Perhaps Voldemort has also found a way into Wonderland and is causing chaos there. Harry, along with his friends Hermione and Ron, must team up with the Mad Hatter and the March Hare to stop Voldemort's evil plans. They could use the unique magic of Wonderland combined with their own wizarding skills.
One interesting plot could be a time - travel story in the Harry Potter wonderland. For example, a character goes back in time to the Marauders' era and gets involved in their adventures, while also trying to prevent a future disaster in the wizarding world. Another idea is a story where a new, powerful magic is discovered in the wonderland, and Harry and his friends have to figure out how to control it before it falls into the wrong hands. A third plot could be about an alternate reality where Voldemort won the war, and the remaining good characters have to find a way to reverse the situation in the harry potter wonderland.
A really interesting plot would be if the characters from Alice in Wonderland were students at Hogwarts. Alice could be in Gryffindor, always getting into strange adventures around the school that remind her of Wonderland. The Mad Hatter could be a Potions master who makes the most bizarre potions. And the Red Queen could be a strict teacher who is always trying to catch students breaking the rules. There could also be a plot where Voldemort tries to take over Wonderland for some dark purpose, and Harry and his friends have to stop him there.
One idea could be Harry finding himself in Wonderland during a strange magical accident at Hogwarts. He could encounter the Cheshire Cat as a magical creature that can disappear and reappear, leading him on a quest to find a way back home while also uncovering secrets about the Wonderland's connection to the wizarding world.
One idea could be exploring the backstories of the minor characters in Deadman Wonderland. For example, you could write about how a particular inmate ended up in the prison. Another could be a what - if scenario, like what if Ganta had different powers. Maybe he could control water instead of his blood bullets.
One idea could be that Alice returns to Wonderland as an adult and finds it has changed completely. The once friendly characters are now in a state of chaos due to a new dark force. Another could be a story where Wonderland is connected to our world in a more secretive way, and Alice has to keep the balance between the two. Or perhaps a fanfiction where Alice teams up with the Cheshire Cat to solve a mystery that involves all the Wonderland characters and their forgotten pasts.
Well, perhaps in the fanfiction, the Queen of Hearts is allergic to lemons. And Alice, unknowingly, brings lemons into the Queen's court. This causes chaos as the Queen starts sneezing and her usual angry outbursts are now mixed with her allergy-induced irritation. It could lead to a series of comical and adventurous events as Alice tries to fix the situation.
One idea could be the Digimon characters getting lost in Wonderland. They might encounter the strange creatures of Wonderland and have to figure out how to get back to their own world. For example, Agumon could meet the Cheshire Cat and have a confusing conversation about directions.
A great plot for a Potter Manor fanfiction could involve a mystery that surrounds the manor. For instance, strange noises at night lead Harry to uncover a long - forgotten chamber. It could also be about Harry restoring the manor to its former glory, perhaps with the help of Hermione's research on ancient magic used in the construction of such manors.
In some fanfiction, Harry could be the one who enters Wonderland. Maybe he's on a quest there, and he meets the Cheshire Cat. The Cheshire Cat could guide him, but in a very mysterious way, just like how Dumbledore often gives cryptic advice to Harry. Harry would have to adapt his magical skills learned at Hogwarts to the strange magic of Wonderland.
A traveler could be from a different magical realm entirely and come to the Harry Potter universe. They bring with them unique magical abilities that both fascinate and frighten the wizards in the Harry Potter world. This could lead to a series of adventures where they either share their knowledge or are hunted down by those who fear the new magic they possess.