I've got a laser pointer that was amusing with Talisker, and Kai seems to enjoy immensely. I've haven't really tried it with Zev yet, since it's been largely unnecessary since she's so easy to play with. Pretty much anything is a toy to her, including my fingers and toes, and most of Kai.
I bought my sister's cats a semi-automatic version, where it spins a laser around the room, and she says that she doesn't dare allow it to be used when she's not in the room, or they'll cause significant damage.