I've been using a cheap alternative to a laser pointer.
One day I was playing with our kittens in the family room and while moving my arms and wrist, my watch caught the light streaming in throught the windows.. they began to chase this reflection immediately as it bounced over the floor...
Pretty soon I started to purposely use my watch as something for them to chase.. both my kittens enjoy it, and I haven't used it long enough at any one time for them to get bored with it.
Every other day or so I do the same thing and they love the game each time.
Cheers,
bp