The idea of Ludwig being born in 1871 as an actual infant and tough-soldier-Prussia, who expected some kind of Instant Powerful (grown!) Ally, having to take care of him is still my fav thing ever.
1871, the Berlin Palace, 11 PM:
APH Prussia: (carries him around the room, exhausted) This is not how the Empire was supposed to look like.
Baby Germany: (starts sucking on his Iron Cross)
APH Prussia: No, Ludwig! That's gross. We talked about this, Ludwig. I explained to you that this is not a toy.
Baby Germany: (making baby noises)
APH Prussia: It's an esteemed military decoration, Ludwig, and you don't suck on military decorations.
Baby Germany: (baby noises)
APH Prussia: You're being so unreasonable right now.
Baby Germany: (baby noises)
APH Prussia: It's like you aren't even trying to understand.