You could try kittenplay.net

As said previously, online it will take a bit of hard thinking to get some decent sessions in.

One piece of apparatus not mentioned above is a tail. Almost all cats have a tail, and like to flick it about. In addition to the sparkly collar, may I suggest ears and/or paw restraints?

In RL, stroking, petting, and grooming are great ways to pass the time. Also, cats spend a lot of time sussing things out by sniffing people and objects in their surroundings. This can lead to some delicately sensual scenes.

The thing about most cats is that whatever they do, they do it 'pretty'.