Learning how to share
Speaking of sharing, this is how my parents conquered that age old problem of "who gets the bigger piece" of whatever. With Larry and I, whatever item we were supposed to divide would be handed to us, with the instructions "one person cuts it in half, the other person picks first". Oh what an effective device that was. With slow, meticulous, eagle eyed precision, the treat would be divided in half by one of us, with the other watching breathlessly. Would their hand slip? Would their eye be out of whack so they couldn't judge correctly? Although we always hoped the other one would slip up, it never happened. I would wager that you could have measured the two pieces on an atomic scale and there would have been no significant difference in weight.