I want to move my gaming PC or set up an HTPC on my big screen TV and play video games from the couch. What do you all use for a keyboard/mouse tray that can be used comfortably on the couch?

I've checked other online forums and plenty of people resort to a lap tray but I don't think that would be comfortable for long and I doubt it would help your accuracy and speed in FPSes.

Any ideas would be appreciated.