My oldest cat knows me quite well. One Christmas not too long ago I bought a silly animated cat decoration. It was a plush cat angel that played music. As Midnight watched me open the box, her expression clearly meant, "Oh heavens, what has she got now?"
Regardless, Midnight likes Christmas. I recently bought a realistic looking chipmunk ornament and hung it on the tree. She ran over it and patted it a couple times. She seemed disappointed when it didn't move and she bounced away.