My daughter just discovered Lego blocks today. I have a few bins of them, and during our garage sale, I decided to pull them out and let her play with them on a piece of rug I layed out in our driveway. Incidentally, rugs are a great way to keep two-year-olds from spreading Lego blocks all across an entire driveway.

Lego blocks are amazing, really. They're sort of the foundation of hands-on creativity. I wonder if a study has been done on the mental development of children who are encouraged to play with them and those that aren't...