Phillips, Pozi, or Supa

Or how to complicate a simple slot.
It's been a strange sort of day, it's never really got light and I couldn't really settle down to do anything. There was no point in going into the fields looking for a blip unless I took the flash and that was just too much trouble.
Fortunately, as it's Tiny Tuesday, I was able to raid one of my boxes of odds and ends for a subject.  Remember when two or three screwdrivers would cope with almost any screw?  Now I've lost count of the number of different types of screw head.