Pyramat. What is Pyramat, you ask? Well, the company refers to its product as "Sound Furniture". You've undoubtedly seen chairs with built in speakers, and speakers to build onto your chairs and so forth. Pyramat is a comfortable lounging mat designed with gamers in mind. Pyramat realizes that video games are gaining in popularity, but it's still nice to be able to pack up and store your gaming stuff when you're done gaming.
The Pyramat is a mat with a built in sub-woofer that rolls up into a portable / stow-able unit that can easily be picked up and packed away.
The Pyramat units plug into the audio out of the gaming system of your choice and up to eight can be connected together for play with the same system.