Dave Occhinoman posted Tiny caramel candy paper box from the Gum & Sweetmeat Co. of New York, undated. Folded size is inches long. From the Letterology Archives. to their -Graphic Arts- postboard via the Juxtapost bookmarklet.
Another design that really catches my eye is the use of creating an object without outlines. The shape is basically created from the background like the water colors on this one. Designs like this could be helpful for packaging or even specialty cards