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For years I've desoldered components from electronics that are destined for recycling/trash. I haven't needed them more than a few times but it's redeeming when I need a specific thing I've never needed before and can pick one out of my component box rather than buying a pack of 100 and never use 99 of them.
Tiny momentary SPST switches are definitely the most common thing I use from the bin but I've also reused some LEDs, capacitors, and resistors.
I have a desoldering project in the works with some old boards because the buttons on then are amazing
As someone who just finished a small electronic project where I couldn't find the perfect switches to save my life, I've sworn to save every switch I run across from now on
I used to do that too when I was still in school. Now I have a box of old capacitors and transistors with the wires broken off.