A computer store,and a blinking cursor.
My father left banking to open his own computer store, so I grew up surrounded by machines. I got my first PC at six and spent hours on it: installing operating systems, hunting down drivers, playing every game I could find, and poking around in DOS just to see what the machine would do. It started a lifelong habit: take it apart and find out how it works.
C:\> cd GAMES C:\GAMES> dir /w C:\GAMES>