I agree, we are big lego/duplo fans in my family as well. Just a little safety warning that old legos, especially 70s (and older I guess) can contain toxics in

I agree, we are big lego/duplo fans in my family as well. Just a little safety warning that old legos, especially 70s (and older I guess) can contain toxics in the colors like cadmium. I am not qualified to say how large a risk that poses. The risk of choking is probably larger? A more positive side note, have you seen that you can order separate bricks from all newer lego/duplo kits? You just search for the name of your kit and get a list of all the parts it contains in the lego support. It is not cheap, but a great service.