The grownups are all very busy, but the children are all bored.
Bored or having nightmares. But Tasárinon was not on a ship and did not see the people dying and has only heard it thirdhand and can't exactly have nightmares about the look in his mother's eyes - well, he probably could, but he hasn't - so he's bored, and he is drawing on the floor. It is an absurdly intricate drawing. He has been embellishing it for three days.