My older kid, who is now 11, drew his first mini-comic when he was in kindergarten. It was called "Goo Man" but because he had that habit of writing his letters backwards it looked like "Poo Man", which still makes us laugh. We made it into a book for him and photocopied it so he could give it to all his friends. He drew another the next year, and I even took copies of both comics with me to comic shows (mostly to inspire the other little kids I'd see there). He hasn't drawn another comic story since, though. He likes art, but not to the point where he does it in his spare time.
My younger kid, now 8, has drawn a few strip-style comics here and there, but mostly what she enjoys is doodling. She loves comics and animation, and I can certainly see how it's inspired her in her drawings. I find it amusing, in this webcomic age of "colour sells!", that she almost never colours her pictures-- they're always black and white line drawings.
Are your kids making comics just like their parents? Or, if they're at that just-barely-holding-a-pencil stage, do you see the beginnings of brilliant artistic talent in the scribbles?