I'm happy that both boys love lego (duplo for now). I have a closet full of my lego just waiting for them to be old enough (to not choke on the pieces).
It's interesting to watch them play with it. These were taken this morning. Nathan was very focused, building towers out of brick of a uniform size (2 more followed these ones). Corwyn was more intent on building trains/cars and taking all the people and animals for a ride around. Both are wonderful ways to play with blocks and they clearly show how differently the boys think.
Corwyn will also build towers. Nathan doesnt' seem interested in building much else, but if I make a "house" he'll spend an hour putting blocks inside and taking them back out again. I can't wait to see how they grow.