Ballsinchains is a little site with a big dream: Documenting gumball machines in captivity and archiving pictures of chained balls around the world. So far, they only have the one pic of chained balls (below):



Plus, a pic of a recently freed gumball machine (below-er):

See how happy they are when unchained? Without their chains, these balls are free to go swimming.
If you spot a picture of chained gum balls and want to help, please notify the "balls master."