A baby is on the way, or has just arrived. You ask the people around the new parents to each write a letter. Grandparents, aunts and uncles, old friends, the couple who introduced the parents in the first place. Some write to the parents: welcome to this, hang on, it gets easier. Some write straight to the baby, a person they haven't met yet and who can't read a word.
We collect all of these letters and print them into a hardcover book. The new parents read it during those first foggy months, usually at two in the morning with a baby on one shoulder. But the book is really for the child. It's a record of everyone who was happy they were born, written before the child was old enough to know any of these people, kept for the day they can read it themselves.
We've been making these books since 2009, and they get opened twice. The first time, an exhausted parent cries over the kitchen table. The second time, sometimes eighteen years later, a young adult reads a letter from a grandparent who is no longer around to send one.