Ok, do not judge me but I went through our random cables box over the Christmas holidays and now everything is neatly coiled and labelled and we only have what we need. I am delighted. And furthermore I gave the spare cables away on Olio (a sharing app) and I can tell you, a lot of people seem to want random bunches of cables. Look what I gave away to a good home:
This is not the first time I have undertaken this exercise (the wretched things breed) so more of this fun will doubtless be available in the future.