Another just happened today. As I think is known I build my own computer systems. Sometimes very small screws are difficult to deal with. I came up with the thought that a 'bobby pin' would be ideal for such screws. Put the screw in the round end of the bobby pin and get it started then just open the bobby pin to remove.
So, OK, decent idea so I need a bobby pin. About an hour later I went outside to have a smoke and sitting there on the concrete outside the door was a bobby pin.
I don't really get it but stuff like that happens with me quite often.