They are called zip-lock plastic bags.
Each cable goes into their own bag with what it is written on it. All the bagged video cables go into another bigger bag. All the networking ones in another bigger bag, etc etc etc. Keeps them tidy, easy to find, and you leave the bag next to your computer so you remember to get you cable and pack it away.
Easy, Cheap, effective.
Nice thing too, if you are looking at people for jobs, look for the guy who carries solutions with him rather than a chip on the shoulder, they will be far more effective.