My blog-buddy “Going Like Sixty” says he’s figured out a way to game those Coinstar change machines you find in supermarkets: go to the customer service counter and cash in two $20 bills for quarters, pump the quarters into the Coinstar machine and get an “eCertificate” from one of a number of popular retailers that includes a $10 rebate on your purchase. Even after you calculate out the fee Coinstar charges, you’re still ahead of the game by about 8 bucks. Makes Christmas shopping more like a trip to Vegas!