How often do you actually pay attention to the change that's bouncing around your pockets? Or even the stuff that's buried in your couch cushions? We usually ignore our change right up until it's laundry day or we're scrambling for a parking meter.
But these industrious folks took a serious look at their coins, and it made the all difference between some spare change and some, well, serious coin.
Steel pennies from 1945, printed from WWII, are worth $10 apiece.
Not a rust-belt joke, these rare "In God We Rust" 2005 Kansas quarters are the result of a grease smudge on the pressing machine. They're worth $100 each.
Because of an extra line below the front left leaf, the 2004 Wisconsin state quarter is worth up to $300.
If you can find a Presidential Dollar coin with a spelling error from 2007, you'll get $45 for it.
Ben Franklin graced the half dollar from 1948-1963. He was then replaced by JFK, making these somewhat rare coins worth more than $125 apiece.
Because of another printing error, these 1995 double die pennies with a blurry line effect around the lettering go for $20-$50. The ones from 1969 and 1972 are worth even more.
WWII's ration on nickel meant printing nickels from 1942-1945 with 35% silver. This drives their price up to $12.25 today.
The silver quarter from 1932-1964 in the right condition will get up to $65.