Non-DIY recommendation: "Cable Elevators" from audionut.com -- work great, with a very clean look.
$160 for a set of 8. Use them myself.
You can use the side indentations for additional wires or power cords.
http://www.audionut.com/pk4/store.pl?view_product=45
$160 for a set of 8. Use them myself.
You can use the side indentations for additional wires or power cords.
http://www.audionut.com/pk4/store.pl?view_product=45