This makes me really wish the US had coins for small dollar values, finding a shiny coin under your pillow is so much more appealing than a wrinkly bill IMHO. Quarters aren't worth a damn thing any more and a cup of coffee is at least $5 now.
I am also sitting at a desk decorated with a bunch of Mardi Gras doubloons because it makes me feel like I'm in the middle of a pirate's treasure so I may be biased.