It's nothing new to find doodle and illustration art used throughout the mainstream graphic design world, but the above example is executed so subtle and sophisticated that I had to highlight it.
A friend recently bought this KERN fleece
(yes, she is a typophile) and immediately came over to show it off. The fleece was shipped in this clear bag with a one-color white doodle screen print. What's so nice is that, wherever the art is knocked out you get a preview of the color from the package on the inside. Simple, effective and cheap to produce.