^Homemade compass. D. showed interest in north/south/east/west
   last nite, so we made a homemade compass. We talked about
   north+south poles - santa + superman live THAT way, and the
   penguins live the other way. His eyes lit up when I said "the
   earth is a giant magnet, that why this works" - he "gets it".
   Smart kid. The info we just "know" as adults came from somewhere
   and its a privilege to be a small part of building new
   knowledge. Learning + play go hand in hand.^