Have you ever looked back and thought, "I wish I'd know that would be the last time I (fill in the blank)." I've found that there are a lot of moments like that when you have kids. We carefully mark firsts in the baby book, but lasts are rarely recorded because most of the time we're not aware that it's the last time until much later.
Here are some of my kids' lasts that I wish I known about. Some were welcomed, some were sad: