sys was thrilled to be the center of attention and she graciously attended to its friends ' requests by creating an unspecified number of pets of all varieties ( cats , dogs and goldfish featured prominently on the list ) , a giant playground filled with things that spin , an ice cream and fudge fountain that flowed in an endlessly recycling loop , where one could flip through a vast selection of flavors with a touch of a finger , and a bouncy sand dune where the children could unload the enormous reserves of energy and hyperactivity that drove sister joseph nuts .