One possibility is that the story could focus on how Harry and Susan adjust to their new life as parents. They might face challenges like sleepless nights and learning how to take care of the baby's every need.
The baby could be a very energetic and curious little one, always getting into things around the house, much to the amusement and sometimes exasperation of Harry and Susan.
One possibility could be that the story focuses on how they adjust to parenthood in the magical world. They might face challenges from those who oppose their union or from the powers that be in Narnia. The baby could also have some special powers or a great destiny.
In some 'Harry and Susan baby fanfiction', the focus could be on the baby's growth and how it impacts the relationship between Harry and Susan. For example, as the baby grows, they might have different ideas on how to educate the child. Harry, with his own difficult childhood, might want to be very protective, while Susan could have a more laid - back approach. This leads to some interesting discussions and growth in their relationship.
It could be a story about the baby's special abilities. Since Harry and Ginny are both powerful wizards, their baby might inherit some extraordinary magic. The fanfiction could explore how they discover and help the baby develop these powers, like the baby showing signs of being able to communicate with magical creatures at a very young age.
Another option is to ask other Harry Potter fans directly. You can go to Harry Potter fan conventions or events (if there are any in your area) and ask around. People who are really into the fandom might know of some great 'Harry and Susan baby fanfiction' that they can point you towards.
In one scenario, their baby might inherit Harry's courage and Ginny's fierce determination. The baby could show signs of magic at a very early age, like making toys float around the nursery. This would bring both joy and a bit of worry to Harry and Ginny as they would need to protect their child from any potential dark forces that might be interested in such a powerful young wizard.
The story could also take a different turn. Maybe Susan has some doubts about Harry's ability to be a good father. This could lead to some arguments between them. But as time passes, Harry shows his determination and love for Susan and the unborn baby, gradually winning her trust back and they work towards building a happy family.
One possible plot could be that Tom and Harry are in a world where magic has some unexpected consequences. Maybe a spell gone wrong results in them having a baby. They then have to deal with the reactions of their friends and family, like Hermione being shocked at first but then helping them adjust to this new situation.
One possible storyline could be that in the fanfiction, Harry and Hermione discover their feelings for each other later in life, after all their adventures. They get married and decide to start a family. Their baby could inherit some of their magical talents, like Harry's ability to speak Parseltongue and Hermione's exceptional academic skills in magic. The story could then focus on how they raise the child in a world that is still recovering from the dark times of Voldemort.
One possibility could be that Harry and Edward, who might be from different fictional universes, meet in a crossover scenario. They fall in love and decide to start a family. The baby could inherit unique powers or traits from both of them. Maybe the baby has Harry's courage and Edward's charm. And their friends from their respective worlds would have to adjust to this new situation and support them in raising the child.