Remember that old expression, "Too much time on his hands"? Jason Kronenwald is a Canadian with a penchant for chewing gum and making pictures. Of blondes. He's been doing it for 10 years.
Apparently, he uses different colors of gum to create his palette (nohing is added to the original color of the gum) and he sticks the chewed wads on to a plywood background. You can also read his bio on the site. Click here for the Gum Blondes site.