I hate to throw things away. Let's say my toaster breaks and I decide it isn't worth keeping. Hm, maybe I'll harvest its knobs.
I've been doing this for years, because hey, you never know when you need a good knob. But it has gotten a bit out of hand, and so with encouragement from my wife, I'm now selling this stuff.
Now on the surface, it seems that it would be a challenge for me to get rid off all of my "good junk". After all, if I sell all of my knobs, then I won't have a knob when I need one! But actually, that's not the case.
I'm happy that the knobs are going to someone that actually NEEDS them for good. It's better for the knobs to go to a loving home where they'll be used as knobs, instead of sitting in a box in my basement until I'm dead, or going into a landfill where they'll decay over the millennia. If I ever need that knob back, I'll just buy one on eBay.
I make very little money selling these little things - the vast majority (sometimes more than 80%) of an items' gross income goes into selling fees and shipping expenses. But my wife is happy, the buyer is happy, eBay is happy, and the shipping companies are happy, and I do have a few hundred extra dollars in my pocket.
That's all pretty awesome.