Playing with cars
Chris was playing tractors with Andy by making tractor sounds. Later, I found Andy making the tractor sounds when he was playing by himself. He also makes a car sound when he picks up toy cars. He threw part of Elliana's butterfly costume out of the way to get to one of his cars. Andy will also start to bounce when he hears music and will hum along when someone is singing.
We put up a gate at the bottom of the stairs since he started to climb them every second he gets. We thought it might make him mad. He actually thought it was funny and stands there shaking the gate laughing with his head back.