I'm also curious to hear what people recommend. At home I have the IKEA SIGNUM, which works to get the power strip off the floor, but it was a bit of a pain to install and adding/removing cables is not easy once this thing is fully loaded.

For storing or bundling extra lengths of cable, I like to use these Velcro thin ties, but it's really only good for larger diameter cables. Smaller cables like USB tend to be too dainty to be tamable with this.

For more semi-permanent installations, you're probably better off just using zip ties, just be sure to trim them flush using a decent angled cutter or you'll leave a sharp edge for you to find later. This package is $0.07 per zip tie, which is decently cheap, and you'll have a long-lasting solution.