In Issa's haiku, Kasa often refers to the headgear sometimes translated as "umbrella hats." But here, I chose to interpret kasa to mean the traditional, bamboo-framed umbrellas that were covered in waxed paper. I'm sure many of you have seen one, or even bought one as a souvenir. They are also called wa-gasa (Japanese umbrellas) nowadays to differentiate them from modern, western-style umbrellas. I love the sound of rain bouncing against a wa-gasa. And I can easily imagine how my heart would jump if a camellia blossom ever plopped onto one while I was inside it.
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.