You could write about a mysterious key that leads to a hidden world. Or a time when a person gains the ability to read minds for a day.
How about a story about a lost pet finding its way home against all odds? Another idea could be a chance encounter that changes someone's life forever. There's also the possibility of a character discovering a long-lost family secret.
One idea could be a story about a lonely lighthouse keeper. He has spent years in isolation, watching the sea. One day, he discovers a strange object washed ashore. This object turns out to be a magical item that starts to change his life and the way he views the world around him.
Imagine a world where people can exchange their dreams. A person who is always dissatisfied with their own dreams decides to trade with others. But they soon realize that each dream has its own problems and that the grass isn't always greener on the other side. Through this experience, they learn to appreciate their own dreams and the unique experiences they bring.
Imagine a forest that is known to be cursed. People who enter it often get lost, even those who are experienced hikers. The protagonist is a journalist who wants to investigate the mystery of the forest. Once inside, he discovers that the trees seem to move and form mazes. He also hears voices that seem to be leading him deeper into the forest. As he tries to find his way out, he realizes that there are strange creatures watching him from the shadows.
One idea could be a haunted mirror. A young woman buys an antique mirror at a flea market. Every time she looks into it, she sees a figure in the background that gets closer each time. At first, she thinks it's just her imagination, but then strange things start to happen around her. Objects move on their own, and she hears whispers coming from the mirror.
One idea could be a story about a lonely old man who lives in a small cottage on the outskirts of town. On Christmas Eve, he discovers a lost reindeer in his backyard. He takes care of it and in return, the reindeer leads Santa Claus to his cottage, and Santa gives him the best Christmas he's ever had, filled with presents and warm company.
A girl finds an old, mysterious diary in the attic of her new home. As she starts reading it, she discovers that it was written by a girl who lived in the house decades ago. The diary reveals that the girl was into some dark magic and made a deal with an evil entity. Now, as the current girl reads the diary, she starts experiencing strange events. Things in her room move on their own, and she has nightmares of the entity from the diary coming to get her.
A conflict within a character can be very interesting too. A person who has always been taught to be honest but is suddenly faced with a situation where lying could save a loved one from a great harm. The internal struggle between their moral values and the love for their family member is a powerful source of conflict.
One idea could be about a lonely old man. On Christmas Eve, a stray dog shows up at his doorstep. He takes the dog in, gives it some food. As they sit by the fireplace, the man realizes he's not alone this Christmas. He names the dog 'Joy' and they become best friends, spending a warm and happy Christmas together.
One idea could be a superhero who has the power to control time but can only use it for a few minutes at a time. He discovers a villain who is planning to freeze time forever, so he has to race against the clock to stop him. This could involve some intense battles and narrow escapes as he tries to outwit the villain within his own time - limited power constraints.
One idea could be a story about a young woman who moves into a new apartment. Strange noises start coming from the walls at night. As she investigates, she discovers that the previous tenant was a victim of a serial killer who used to hide his victims in the walls. She then realizes the killer might be back for her.
An idea is a story set in a small, isolated town. A journalist arrives to do a story on the town's history but soon discovers that there are some dark secrets being kept. People in the town start acting very strangely towards the journalist, and she realizes that there is a conspiracy to keep the town's real past buried. And she might be in danger if she digs too deep.