Remember these back in college or in your first apartment out of school? Modular wire cube shelving wasn't exactly the most beautiful of storage options, but it's undeniably cheap and efficient. You might even have a dismantled set stored somewhere in the basement, garage, or attic. Here's an unexpected use of the grid storage system for home entertainment center organization...
Neatniks hate visible cables and cords...I know I do. Reddit reader jhoff484 set out to eliminate the cable clutter of his home entertainment center, taking apart a set of wire cube shelving pieces (his wife's college set!), snipped to size using a tin snips, and then attached/arranged to hold an impressive array of cords, power bricks, and a power strip behind his media console. Components are attached onto the metal grid using easy to add/remove cable ties, but twist ties or velcro are also viable options.
That's everything behind the scenes of a Xbox 360, Nintendo Wii, and Linux box for MythTV setup.
Some commenters did note bundling long lengths of cables/cords so tightly could prove a fire hazard, the bends in the cords possibly causing excessive heat buildup, so consider using large, gentler loops when arranging a similar setup for safety.
More photos of this DIY home entertainment organization system here.