Many indie toys can be traced to earlier characters, concepts, or designs from the 1960s-1970s. I believe I may have uncovered the origin of Chicken Fever, or at least the inspiration for the figure.
A short while ago, I came across this postcard-sized item, which I believe is from the 1970s. It's called a "Kaiju Siri E" which means "kaiju scratch illustration." The image is slightly raised, with a felt-like texture. Basically you put your blank sheet of paper over it, rub it with a pencil, and produce the image.
More after the jump: