When my wife and I moved into a new house, my big box of cables got sorted into several smaller boxes of cables, and an "other" bin.
I also have a travel bag of meticulously packed USB cables of all kinds.
3 times in the last month, I produced exactly the right cable for helping her set up some older hardware at her office at her small business.
The kinds of cables lesser men would have thrown away long ago.
I have one box that has all that I need when we go away for the weekend/week (by car, not plane). All the chargers since the family now has a lot of phones, headsets, kindles, cameras etc. 2 HDMI cables, audio splitters, speakers, extension leads etc that I nearly always need when away for a while.
And then my commute bag has a small essentials bag for the now rarer times I work elsewhere.
All with duplicates of what I already have at home. That I before instead used to unpack and reuse at home, then find and repack all the time, and forget some. Not a problem anymore. My tech packing is literally picking up a box and put it in the boot of the car. Done.