I'm trying to get some interested parties to play the game Middleman, which is a pen/paper market simulation. It should play rather quickly, so it's not a big time investment.
Here's the game's description:
Players take the part of traders dealing in tins of some worthy commodity, say tuna. Each starts with a fixed sum of money and then buys and sells tins of the product with the object of ending the game with more money than his or her competitors.
I'll run the first game of it and get people hooked. Hopefully then someone else will run one for me.