When I was a kid, an afternoon of pure bliss required only three things: A cold glass of Hi-C (Orange flavor, thank you very much.) Back-to-back episodes of “Bewitched” My mountain of Legos And though my taste in beverages and TV has changed, I still love those little interlocking bricks. It's not the usual blah, blah, blah. Click here to sign up for our free newsletter. Today…