For most casual gaming I'll just use the mouse on the couch cushion next to me, with my keyboard on the left side cushion.
If I need more accuracy then I'll grab a hard coffee table book, and set that on the cushion along with a proper mouse pad. I really only find this necessary for online FPS action though (counterstrike source, etc.).
Also, I haven't tried a 'laser mouse' but the Logitech Bluetooth set includes the MX900 mouse, which is a very capable optical mouse that will work on most surfaces. They only mouse I've had better results with is my old logitech corded optical with the dual optical pickups. I can use that one on the side of my leg and it works well :).