Hey, have I got a deal for you!
Here's how you can make money quick, from the comfort of your own home. OK, you got me, it's neither quick, nor comfortable, nor from your own home, but it's so crazy, it just might work.
Pick a local fast-food restaurant - it doesn't matter which. Order lunch there every day, and be sure to count your change. When they short you (and they will), squawk and get your cash. When they give you too much change (and they will), just pocket it.
You can increase the odds of the latter happening by handing them random change after they've rung up the bill, in the guise of getting rid of or avoiding coins. For instance, if the total is $5.88, hand them a ten, then after they ring it in, say "Oh, wait, here's 13 cents". This will typically cause the cashier to panic, and the odds that they will give you twenty dollars in change increase dramatically.
This method will work because the typical fast food cashier has never been without a calculator since birth, and possibly before. (Ewww?) And the typical fast food manager hasn't either. Basically, neither of them know how to make change. In fact, the reason that the manager is the manager is that the restaurant was losing too much money when he or she was a cashier.
I'd offer a suggestion to combat this problem, like having the grade schools have a least some practical money math in addition to set operations and Venn diagrams, but hey - this is a profit deal. Until things change, I'll be waiting in the longest line in front of the glassy eyed check-out person every time.
You can respond to my ranting here.
To sleep: perchance to rant.