I double the cables over until they're short enough, and then tie them into a loose half knot.

No fasteners to wish for, or to fail.

Both ends of every cable are always next to each other for identification at a glance.

Different cables cannot tangle with each other in a box.

There are no axial twists imparted into the cable.

(Stage hands hate this technique, but this isn't stagecraft.)

I use cable velcro ties. A big roll of them is cheap.

I use twine for the same reason. Dirt cheap. Lasts forever. Doesn't leave residue on your cables. The downside is I end up cutting the twine when I need to use the cable but a couple inches of twine in insignificant.

I have a roll of velcro for this. Massive roll, and I cut off small 7-8cm pieces.

I routinely steal my wife's hairbands to tie various cables in my cable stash. You can never have enough USB cables of various types. But as Murphy dictates, the USB cable that I need now is one that I don't have in my stash.

I bought a small garden twist tie roll years ago. I don't have a garden but I have boxes of cables. Probably won't run out for another 10 years.

Used bicycle tube cut into rings make the best elastic bands, they don't degrade

Garden stores/sections sell circles of green Velcro you can cut; I figure of it's good enough for UV then it'll work in a box.

As a bonus, you don't need to raid her hairbands.

Bread ties are good too. Sometimes they're too short, but you can twist a few together