The lemonade stand path is fun, and we've done a few things in real life like that, but there is this dynamic where kids may be more capable of useful work in the digital space than they are in the physical space. I really do want their end product to be more than a gimmick or toy (sure, adults buy lemonade from lemonade stands because they want something nice to drink -- but mostly it's just to be nice to kids). I want them to see if they can make something that other people are willing to pay for without knowing they are kids trying to make a buck.