There are some skills that just aren't necessary any more...
here are some of my favorites...
Adjusting rabbit ears on top of a TV
Adding a nose-guard and rails to your skateboard
Be Kind - Rewind
Calculating a square root using pencil and paper
Calling collect on a payphone
Cleaning the ball inside a computer mouse for better traction
Cranking up or down a car-window
Dewey decimal system
Loading film into a 35 mm camera
Pumping up the tongue in your inflatable shoes
Smelling a freshly mimeographed test paper
Tuning a radio
Watching a slide show with a slide projector *beep*
Winding up loose cassette tape with a pencil eraser before putting the cassette in the deck
Read the rest here.