What kinds of things remind you to slow down?

Once I was on the beach with our younger daughter Natalie, and she and I were walking from where we'd parked to where our towels were.  I don't remember where everyone else was or why I was walking so fast, but I stopped to look back at her since she was lagging behind.  She was about 3 at that point and she was holding a shell.

"Mama," she said, "if you go slow, you'll see stuff."

Yes, including her.