piece in the pic is just found on the floor

This checks out. Even with all of my storage and shelving, I have found the floor to be a nice place to go parts shopping. JST bits are at the top of the list to find, usually. (What was that? You never bought any? You’ll find some, don’t worry.)

Do you need a bit of wire to patch a trace? Take your shoes off and walk around a bit and you will immediately find a lead you clipped off a through-hole component in about 15 seconds, even though you vacuumed 6 times since you lost it.