I bought a small fur covered fake cardboard mouse for my skinny little kitten. My buddy at the pet store let me sweeten it up by leaving it in with the feeder mice for a day. Wow, did that cat ever go ape sh.t on that mouse. She growled just like a dog - I never knew cats could do that. She carries that mouse in her mouth, prances all over the house with it, throws it up in the air, etc, and I can hear her doing this all night long.
I also found out a good way to get your cats to go whereever you want them to go - a laser pointer. Like if you want them to go into the utility room, they will just follow the bouncing ball. Of course, if you want them to spin around in endless circles, they will do that too