"They grow so fast" and you took so many photos of them as babies to make sure you don't ever forget, but you never actually get to look at them. Sound familiar? Consider creating a memory book of your children's early years to be able to access and enjoy those gorgeous photos of your little ones whenever you like... and they'll love looking at them too!
When children see pictures of themselves, it builds their sense of self and identity. It gives them context and reinforces their memories. "Visual reminders of school events, family trips and everyday activities are proof-positive that a child has a place in life and relationships with others." (from this article in The Baltimore Sun)
It doesn't need to be a book per year. It doesn't even need to be a book per child. It's about getting those photos off your phone or hard drive and into their hands.