This is the simplest instructables possible. Just one step. A very cheap and sturdy cable holder (perfect for patch cables).
Step 1: Step 1: Screw a Comb Under the Desk
The only step needed.
Screw a comb under the desk.
Just make sure you got a comb with large spaced teeth.
Mine are 5mm spaced. Got it from a local store for 1.50 euro