Back when I went to school, we had to learn about the stock market and family budgets.
We were provided $ 1000 in funny money. And, we could buy stocks, puts, or calls. (Back when I went to school, you had to buy stock in lots of 100, which is why we were given that quantity of funny money. Nowadays, we can buy a single share of stock.) The contest revolved about the person with the highest balance after two months would win.