Because I started this morning with two empty trash bins, one for "recyclable" stuff, and one for everything else.
The recycle bin is already about half full of cut-up, smashed flat cardboard boxes and misc packing material, and the regular trash bin is about one-quarter full.
I'm taking the advice of one of my friends over on the Celica Supra forum; drag it all out, sort it, and then rearrange it as you put it back in.
So far, I've found another Heathkit receiver (a GR-78) I bought and forgot about, a Commodore 1571 disk drive with cables, two Commodore power supplies, both new-in-box, all the cables I've made over the years to connect various radios I've owned and still own to both an AEA Commodore Packet Radio modem, and my Kantronics KPC-3+, and several more boxes containing all the leftover stuff that you never use, but they include in the box a new PC motherboard comes in.
At least I can now have the big door open, and walk from there to the front of the garage, so it's a big improvement.
My current SWAG is that I'm about 21% to where I need to be.
And I haven't gotten to the workbench area, and the shelving along the walls....
Gonna be a long, slow, slog........