Julie makes this noise that sounds just like the cars they fly on The Jetsons...I call her Julie Jetson when she gets going. She will race around the house making this noise. It is really cute.
She likes to get on the top level of her cat perch, which is by a window, and stretch up as far as she can up under the pulled up miniblinds and valance. Several times she has managed to knock the valance curtain rod off the brackets and then leap across the room when they fall. She will then look at me like...'Did you see that thing jump off of there?'
We have a fireplace that has not burned wood in decades. It has a more or less ornamental set of gas logs in it. This is her play house. She will get behind the logs and slowly rise up to peek at us...then slowly lower herself back down thinking she can't be seen...but her tell tale ears are still there. This is also her toy stashing place.
Other than that...she just pretty much does normal silly kitty things.