I refactor the box every year because there are usually some new cables.
Some simple empirical rules:
- keep the shorter cables
- maximum of 3 cables of the same type: for donating, for lending, for spare
- USB cables that can transfer data > USB cables that don't transfer data
- no damaged cables
- store long cables as coils (tied up tight)
- store short cables in bunches (tied up tight)
- should be sorted and grouped into categories
- box should be sealed, but aired out once in a while (outgassing)