Maybe use a desktop instead, because crossing state lines with that laptop might carry a jail sentence with a minimum term of 5 years.

I would assume that running an AI image generation software is something you'd do on a desktop anyway.

The state lines thing is only about federal crimes. Possession is most likely illegal as a state crime on its own. The repercussions of even being suspected of crimes in this area means that every rational person would take precautions far above what is legally necessary to prevent any association with such material.

But it requires transmission over the internet, right? This is actually very interesting. Am I legally allowed to draw naked kids for my own enjoyment in the comfort of my own home?

Simple possession is also a crime, just a state crime. The internet transmission triggers federal jurisdiction and federal charges. There is no safe/legal way to possess such images.