Putting the interior panels on my half doors and stupidly put one of the pull strap screws on the dash. It fell in the crack between the defrost outlet cover and the windshield frame because of course it did.
I pulled the glovebox and the dash speaker and spent an unplanned extra hour and a half in my 105F garage with a mirror, flashlight and magnetic pickup tool poking around in every nook on top of the HVAC housing that I could get to, pulled the blower motor in case it went down the open recirc air door, and was about to give up and accept the likely perpetual rattle I was going to hear every time I drove it. Then I looked from a different angle, and there the little bastard was, hiding on the lower lip of the dash behind where the dash vent duct bolts to the steel dash frame.
I pulled the glovebox and the dash speaker and spent an unplanned extra hour and a half in my 105F garage with a mirror, flashlight and magnetic pickup tool poking around in every nook on top of the HVAC housing that I could get to, pulled the blower motor in case it went down the open recirc air door, and was about to give up and accept the likely perpetual rattle I was going to hear every time I drove it. Then I looked from a different angle, and there the little bastard was, hiding on the lower lip of the dash behind where the dash vent duct bolts to the steel dash frame.