'When Grandpa Died' is a children's picture book aimed at atheist/humanist parents who wish to introduce the topics of death, bereavement and organ donation to very young children in a factual manner. This book uses simple truthful words to explain what happens when someone dies. It offers reassurance to a bereaved child by encouraging the child to remember the deceased person via memories by drawing pictures and by reinstating that the child and their family essentially remain safe.