JPS Labs, Custom Power Cord Company, and Sonic Horizons have outlet extenders that will give you four sockets. The cheapest is the Sonic Horizons Hurricane at $200; it has four Hospital Grade outlets. I believe both JPS Labs and CPCC versions are in excess of $500 each. Even more expensive would be to purchase two Richard Grey Power Company devices at $700 each. Or a PS Audio P300 Power Plant for low-power devices and a PS Audio P600 Power Plant for higher power devices. Short of re-wiring your house to put in more wall sockets I don't know of any other "good" way to plug eight devices into two sockets.
