Hi ladies - nice to see everyone chiming in when they can.
I am sure you have heard of doing this, but what I started to do is
have 3 containers: 1 for give away, 1 for put away & 1 for garbage &
started in less cluttered room first, sorted and cleaned it with using my
containers. And the "give away" box went directly in my car & was dropped off at charity shop. I really felt great having 1 room completely done.
Since basement is the worst, I am dedicated 1 hour/weekly to deal with this in the same way. Will take longer, but not so overwhelming breaking it into small time segments.
Keep up the good work, everyone & "happy decluttering"