My son recently developed a new fascination with the mailbox. “Mom, how do I get a letter from me to someone else?” he asked one day with tremendous curiosity. We went through the steps: write the letter, put it in an envelope, address the envelope, and don’t forget the stamps. Then one morning my son showed me a picture he had made for his best friend that he desperately wanted to mail. It was perfect timing—right at the start of our morning routine to get us all out the door in 20 minutes or less. I paused to consider the request….