"Packratters can't even let go of a coffee can full of used pencils or an 8-track cassette player."
Right, that's a good definition. It really is a disease. I have a VERY hard time throwing anything away, just because I don't want it any more. If it's broken I can toss it easily. Plastic is the bane of my existance, it almost NEVER breaks. Every few years I will force myself to throw out the big stack of hard plastic drink cups that has grown in my kitchen cabinet. I really wish we still lived in a more bio-degradable world.
There is no excuse.
If you haven't used in the last year, to the trash can it goes.
I have an elderly packratter relative who sends/distributes the ephemera of a lifetime in dribbles to the whole family.
It's ruthless, I suppose, but after a five second review I decide whether it goes on a shelf or in the trash. 90 percent goes to the dump, and I think of it as a favor to the packratter relative who can't do it himself.