Of course, this is not always the case. But when the way to avoid it is cheap, fast and - most of all - easy, why wouldn't you try preventing it?
Step 1: The Materials, the Tools and the Cable to Work On.
After you have some velcro, some kind of scissors (because you don't have to sew or anything thanks to the adhesive on velcro) and the cable to work on, you're ready for this project. "Time to dance!"
Step 2: Preparing the First Piece of Velcro and Attaching It to the Cable.
The next thing to do is to cut a piece of velcro from the roll and attach it to the cable. Make a little loop around the cable and attach the end to the piece of velcro itself (the picture explains much more than my rambling).
Step 3: Preparing the Second Piece of Velcro and Attaching It to the First Piece.
NOTE: Make sure that the two pieces are carefully aligned.
Step 4: Cleaning Up the Edges, Finished Product and Some Thoughts About the Project.
Straps like this are sometimes included with some cables and my experiences of them have been pretty good. The problem with the industrialised version of this project is that the velcro provided is of bad quality and/or the area of the velcro is small. In these cases, the strap hasn't worked properly for it's simple purpose.
I've been meaning to do this for a long time, but I haven't got around doing it because I "haven't" had time to do it. That's pretty bad excuse, because it took me around five minutes to find the velcro and around two minutes ti put this together so I think I'll do it for many cables now that I've seen how it works.
One thing that came into my mind while I was doing this, was that this can be so easily modifiable. You could use different colours of velcro and mixes of them (i.e. "loops" in one colour and "hooks" in another), you could alter the length and width of the strap, you could... To put it simply: it's adaptable, easy and it works almost everywhere. I think that the situations where this project is essential are LAN-parties, travels with laptop and other situations where you have to transport loads of cables from place A to place B.
Nonetheless, thanks for reading this ible and merry christmas to you all!