Some of my favorite vintage quilts are made in the Flying Geese pattern, with various fabric scraps used as the dark color and plain muslin used as the light. I seleceted all sorts of colors in 100% cotton yarn that went together in a pleasing manner, and placed them randomly when assembling the afghan. This is a great pattern for variegated yarns as well - those squares remind me of vintage calico.

This could also be a great stash buster pattern - use up your scraps for the darks and just purchase enough of the neutral to hold it all together!