Forget Lego, with PlayBox you can create a city for your matchbox or slot cars very quickly. Create an entire urban landscape for your train-set. Make doll houses. Paint and cut the panels for a realistic look. Once you purchase all the different components you can use them as a template to make your own panels from cardboard boxes.
Check out how fast you're growing
Stature & Weight-for-age chart generator for kids 0 to 20 years
Stuff for kids to do in cities your parents travel to.