Shouldn't every kid have a pen pal?
I have a best friend in Florida, and our little boys happen to be the same age.
We wrote Nathanael a note.
The best part was probably putting the stamp on it. (known to three-year-olds as "the sticker")
And of course, handing it to our mailman, Andrew, who drove off in his little white mail truck.
So THAT's how mail works!
Check out the book, The Post Office Book: Mail and How It Moves