Nowadays it is usually to have some devices that need to be charged, and most of them use an USB wire... but there are several types of USB, mini, C-type, ... and when you need one, it is usually lost or messed with other wires, but I found one good solution.
A Coccon organizer!
I found them with different sizes, seeing the amount of wires, I choosed one big enough, A4 size and almost the wires I use were packed, as you can see in the image. Now... or I find the one I need or I lost all of them!! There are several sizes and you can choose one (or more) to organize your bag.
One interesting object to organize your life!