They play hard

 Mom is still working from home and sits right outside the foster room. She can hear them banging around all the time. 

We always like to try to report who the brains of the operation might be....in this group probably Hurray. Those two gray kittens have the brains of a rutabaga.

The video is fun, but if you look closely, you can also see Hurray's ninja tabby stripes.