I finally published an etegami portfolio book (i.e. small coffee-table book) of my favorite etegami from the past three years. See details on my Etsy shop, and get a 15% discount by using the following code YAYYAYYAY15OFF at checkout. The code is valid only until April 1.
Etegami (e= "picture"; tegami= "letter/message") are simple drawings accompanied by a few apt words. They are usually done on postcards so that they can be easily mailed off to one's friends. Though etegami has few hard-and-fast rules, traditional tools and materials include writing brushes, sumi ink, blocks of water-soluble, mineral-based pigments called gansai, and washi postcards that have varying degrees of "bleed." They often depict some ordinary item from everyday life, especially items that bring a particular season to mind.