The two remaining kittens seem to be doing well. They are content and mostly quiet. Floki and Mabel both lay in the box with them. A couple of times I've found a kitten in the middle of the floor. I'm still not entirely sure which cat is moving them out of the box.
I completed #5's bag this morning, in time for him to bring it to our appointments. He was quite excited to bring his toys with him.