Willie, the 7-year-old tabby that allows my hubby and I to live with him, loves playing with rolled-up balls of tin foil and wine bottle corks.
He also loves watching "his" fish in our 80-gallon aquarium. The aquarium actually contains 33 fish, but "his" fish -- the ONLY one he shows any interest in -- is a (yep, you guessed it) CAT fish. Seriously, Willie will sit on his stool (yes, he has his own stool) in front of the aquarium for hours watching one fish wiggle its whiskers from inside a little log. It's his cat TV.
Willie also enjoys playing "ambush!" One of us will be walking through the living room, and suddenly a furry blur will streak out from behind a chair and swat at the nearest human leg.
If that leg is mine, it's a hit-and-run attack that does little damage. But if the leg is my husband's, it's a full-on assault that draws blood (not Willie's).
My hubby (before we were married) adopted and raised our little bundle of bossiness, and "taught" him to "fight." They wrestle and mess with each other all the time. Hubby has steel skin and doesn't mind all the scratches and bites.
I, on the other hand, being more sensitive to pain, had a "talk" with Willie after his first attack on ME. We came to an understanding, and he knows not to use his claws or teeth on me the way he does with my hubby.
Our version of "ambush" has actually evolved into "hide-and-seek." I'll start walking around the couch and see him head towards his ambush position, so I'll reverse direction and duck down. He'll come out and look around, wondering where I went. As he moves around the couch, I move just ahead of him, always out of sight. We both reverse directions... well, you get the idea... it can go on for a while... until I jump out and ambush HIM!
Oh, and this is neat... he puts his toys away. We'll be tossing a tin foil ball around with him, until he grows tired of it. Then he'll pick up his toy and take it to his "room" down the hall (a bathroom) and place it next to his food dish. When he's ready to play, he brings it out again. It's very funny... we'll go to bed at night with him still playing with 3 or 4 toys in the living room, and when we get up in the morning, they'll be neatly placed next to his dish.
Sheesh -- look at the length of this post! Sorry 'bout that! See what power cats have over us?!?