One interesting plot idea could be Scotland taking on the role of a protective older brother figure. He could be teaching baby England about their shared heritage, like the unique landscapes and traditions. For example, showing him the ancient castles and explaining the stories behind them.
Perhaps a plot where Scotland has to take care of baby England while their parents are away. Scotland might struggle a bit with the baby's tantrums but also discovers new things about England's personality at such a young age. He could introduce England to local Scottish animals like the Highland cows and see how the baby reacts.
One idea could be a story about Baby England and Scotland's first encounter with a magical creature in their land. It could be a fairy that leads them on an adventure through the ancient forests. Another plot could involve them trying to create their own little kingdom together, with England being more focused on building forts and Scotland being in charge of finding food sources. And a third idea might be that they get lost in a mysterious fog and have to rely on each other to find their way back home.
Scotland would probably be very gentle with baby England. He might hold the baby in his arms and talk softly to him about their land and people.
To develop Baby England's personality, start with his inquisitiveness. He might be constantly asking questions about how things work in their land, like why the sun rises in a certain place. This could later develop into his more intellectual side as he grows up. Scotland's personality can be developed by showing his love for nature. He could be often found collecting leaves or stones, and this love for the natural world could shape his sense of independence. Also, in the face of conflict, England might try to talk his way out, showing his diplomatic tendencies even as a baby, while Scotland might be more likely to stand his ground physically, highlighting his勇敢 (bravery).
A modern - day fanfic could involve a Scottish exchange student in England. The student faces cultural differences at first but then falls in love with an English local. They explore each other's cultures together, like going to traditional Scottish Highland games and English country fairs.
One idea could be France taking on the role of a mentor to baby Canada. He could teach Canada about art, cooking, and the French language. Another plot could involve France trying to protect baby Canada from the chaos of the Hetalia world. Maybe some other countries misunderstand Canada's relationship with France and France has to clear things up.
One interesting fanfiction could be about baby America constantly getting into little adventures that England has to deal with. For example, baby America might try to climb a tree in England's garden and get stuck, and England has to figure out how to get him down in a gentle way.
One interesting plot twist could be when other characters start to notice her more 'feminine' behaviors despite her attempts to hide it. For example, she might accidentally show a preference for more traditionally female - oriented tasks or hobbies.
One idea could be that the countries from Hetalia are somehow transported into the Naruto world. For example, Italy could end up in Konoha and his carefree attitude might amuse or annoy the ninja there. Maybe he gets involved in a mission by accident and his unique skills from being a nation, like his knowledge of different cultures and languages, could come in handy. Another plot could involve Naruto being sent to the Hetalia world and having to deal with international relations in a very different way than he's used to in the ninja world. He might try to use his ninja way to promote peace between the nations there.
One interesting plot idea could be the characters from Hetalia encountering the creepy and often disturbing entities from Creepypasta in a haunted location. For example, Italy might stumble upon Slenderman in a dark forest. Another could be the Hetalia characters being trapped in a Creepypasta - inspired nightmare world where they have to face their worst fears, like Germany facing a horde of Jeff the Killer - like beings. And perhaps the Hetalia nations could be forced to team up with some of the less - malevolent Creepypasta characters to escape a shared threat.
One idea could be to have the characters from Hetalia and Homestuck participate in an international event together. For example, a global gaming tournament where the strategic minds of the Hetalia characters and the unique abilities of the Homestuck characters collide. Another plot could involve a dimension - hopping adventure where the Hetalia countries find themselves in the Homestuck universe and have to adapt to its strange rules and customs while trying to find their way back home. Or perhaps a story where the trolls from Homestuck end up in the Hetalia world and start causing chaos among the different nations.