She told me that the baby was in her crib and still napping, and that the other kids had been fed and were just playing. I could hear them all playing happily, so I took my time getting downstairs.
I took too long, I guess.
The above picture is pretty much what I found when I came downstairs. Well, except for the baby. This picture was taken a little bit later, after she woke up.
Yes, in the space of the few minutes after my mom had left and when I could just hear them and not see them, they managed to pull both mattresses out of their room and up one flight of stairs, rearrange the living room furniture, haul all the blankets and pillows out of their room, haul down all of the blankets from storage and proceed to have a jumping jamboree in the middle of the living room.
They can be extremely productive when properly motivated.