So I did a little searching and found this game that I played when I first starting "surfing" the Internet back in 1995. It's had a bit of a face-lift over the past ten years (did we all have Java back then? I can't remember!), but it is still the smart little addictive game I remember it to be.
For the entrepreneur in all of us, it's an old-fashioned Lemonade Stand without the lemon juice stinging your eyes, and no sunscreen required! Give it a whirl!