A good place to start is by exploring the characters' personalities. Spock is logical, Amanda is warm - hearted and nurturing. Think about how their personalities would interact with the new addition of a baby sibling. For example, Amanda might be the one to encourage family bonding activities, while Spock would approach it from a more educational perspective.
You could start by creating a backstory for the baby sibling. Is it a half - Vulcan, half - human like Spock? Or something else entirely? This would influence the plot. If it's a half - Vulcan, it might face some of the same challenges as Spock did growing up. Amanda would then have to use her experience with Spock to help the new baby. And Spock could be a role model or a source of advice for his sibling.
One idea could be a fanfiction where Amanda discovers that Spock is going to have a baby sibling. She could be filled with excitement and start preparing all sorts of things for the new arrival. Maybe she plans to teach the baby all about Vulcan and human cultures, creating a unique bond even before the baby is born.
Family loyalty is also a prevalent theme. Spock is known for his loyalty to his family in the Star Trek series. In fanfiction about his baby sibling, this loyalty is often explored in different ways. He might protect the baby sibling from harm, or he might be involved in teaching the baby about their family heritage and values, whether it's Vulcan or human.
One great Spock baby sibling fanfiction is 'The Younger Spock' which delves into the relationship between Spock and his new baby sibling. It shows how Spock's logical nature is both challenged and enhanced by the presence of the new family member.
Fanfiction.net is another place to search. There are many Star Trek fans who post their works there. However, the quality can vary, so you might need to sift through a bit. Look for stories with high ratings and positive reviews to find the better Spock baby fanfiction.
Perhaps the baby is born during a time of intergalactic unrest. Spock and Uhura are then forced to protect their child while also fulfilling their duties in Starfleet. The baby could be a symbol of hope and unity between the two species, and they have to ensure its safety from those who might see it as a threat. They might also have to deal with jealousy or suspicion from some of their colleagues who don't understand their relationship.
Common themes include the exploration of his Vulcan upbringing. How he is taught the strict Vulcan ways as a baby is often written about. His interactions with other Vulcan children are also a theme. Plus, his unique position as a half - human in a predominantly Vulcan society is a big theme. Writers often explore how this makes him different and how he copes with it. For example, in many fanfictions, baby Spock has to deal with the stares and whispers of other Vulcans because of his human features.
The fanfic could show how the very act of giving birth to Spock in a mixed - species relationship challenges the traditional notions of identity in both the human and Vulcan cultures. Amanda's experience of bringing a new kind of being into the world could be a central part of this exploration.
One popular Spock baby fanfiction could be the ones where it explores how the crew of the Enterprise reacts to a baby Spock. Maybe they all take turns babysitting and there are cute and comical situations like McCoy being overly cautious about the Vulcan baby's health.
With the baby's arrival, they would have less time for just the two of them. But this could bring them closer in a different way. Spock might become more in touch with his emotions because of the baby, and Uhura would be more understanding of Spock's Vulcan side as they navigate parenting. For example, when the baby has a fever, Spock uses his Vulcan knowledge to try and cool the baby down, and Uhura is impressed by his calmness and resourcefulness.
You can start by getting to know the character of Baby Summers. Read any existing material related to this character if there is some. Then, think about the setting you want for your fanfiction. It could be a modern-day suburb or a magical land.