Rescued baby bunny

My husband rescued a baby bunny from our neighbor’s outdoor cat who was “playing” with it. We are planning on calling a wildlife rehabilitation place when they open tomorrow morning to see if they can accept it, but we don’t know what to do to keep the bunny safe overnight. This is the place we’re planning on calling: https://www.pugetsoundwildcare.org/copy-of-found-an-animal If you have any advice or know of another place we could bring it, please let us know. Thank you!!