i never throw away any parts of any kind.........it's why i'm looking at a small storage shed to handle all the spares i've accumulated 
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I got 2 car garage, garden shed and a small outbuilding, plus (this drives my wife nuts) 2 bikes (mostly assembled
) on patio
PJ
We have a 2 car garage, 2 garden sheds, 1 covered parking thingy, 1 small military surplus Quonset hut, 1 pickup camper, and my tin shack shop/Costco shed combo building. All are full of video games and pinball parts, car and truck factory manuals, and motorcycle parts. Also, 7 vehicles and just one (so far!) motorcycle-which is frequently parked in front of our porch (much to my guy's annoyance) he he he.
Yeah, we often refer to our place as "the compound" and the best part is we are right near the center of the city. . .lol.
I also agree with the philosophy, as soon as you throw out that part you will need it within a week!