No, I am not talking about firing our cat. I really am talking about paper sacks.
Both of our cats love to climb into paper sacks that we leave on the floor, and make the sacks rattle. Of course, this is no accident. It looks strange to see the back end of a cat hanging out of a sack, while the sack itself is rattling and changing shape.
Who needs tranquilizers when you can be entertained by such a simple thing as a paper sack?