Looks like my office, my benches and my garage.
When I can no longer find
anything (takes about 6 to 12 months) and my bins are like yours (empty), I set up a pair of sawhorses, flop a 4X8 (or 4X4) sheet of plywood on it and start sorting all the pieces parts in piles on it and by what ever categories develop. When that particular bench (whatever) is clear, I sort out the stuff back into the bins, zip-locks, 5 gallon buckets - whatever suits...
Now (and this is imperative),
mark the bins! The other stuff you can see into. Take the time to do it because if you don't do it now, you'll never do it (am I wrong??). Once a bin is marked (PITA, for sure, but...) and
has something in it, it will forever after be a designated depository (Suppository?? I get the two confused) for that/those items. You know this already (I can tell) but you gotta do it. Did I say you gotta do it??...
Trust me, you'll thank me for the rest of your life. Maybe even longer.
Then move on to the next disaster.
Oh, and the reels of SMD stuff? As a senior fellow hoarder, I suggest you give'em to Good Will (or whatever they're called in Scotland). Be honest - they're about as likely as you are to make use of them. Only now,
they have to store them .