I have found that the best way to keep from needing some odd piece or part is to keep it. I have kept goofy stuff for years, then one day in a fit of reason, I say to myself, "Self, you have dragged this thing around the country for years now, and have never found a use for it. It's time to throw it away." So I do. Within two weeks, never fails, I need that exact thing and have to go to town to buy it again.
I plan to retire soon and find a place where I plan to set down roots and never move again. I have vowed that once I find that place, I will never throw away any useable thing again.