I am reconfiguring the computer lab at my school. I am doubling the number of computers from four to eight, I replaced the tables with ones that can be height adjusted for the smaller students I usually teach, and I installed cable management!
After looking long and hard, I found the Signum cable management tray at Ikea for $10 a pop. I was going there over the last weekend for some furniture, so I picked up six of these to put two on each table. I installed them today, and I am very pleased. Good price, good product.