Some of the creations Isaac is starting to make with his Lego are quite detailed. Today he came out to show me this space shuttle. After an initial launch he decided that he'd also need a rover to accompany it on it's trip to Mars. The buggy even had a camera mounted onto it so that it could take photos of the far away planet.
I sent Darren some photos of his creations and, being a space enthusiast, I think he was quite pleased to see that he's following in his footsteps already.