This website has many great visuals that attempt to explain the current economic "situation." You can look here to see where all the $$$ went. This lets you compare the cost of the $700 billion dollar bailout to the cost of the Iraq war. Examine this one to compare government actions during past recessions.
Which brings me here. Show the kids this one. I guarantee at least one of your students will say, "Holy ..... (something)!" when they see that last visual. That is one large pile of cash.
How many students do you have in your class? Probably around 27 right? Assign one visual to each student and have each student explain the visual to the class. Might be fun and informative.