I sometimes do book signings. My record was when I signed about 300 books in Kochi. That was strenuous.
When I sign my book, I always add a small illustration. It all started with a tree and a bird perched on it. The tree symbolizes my name ("Mogi"). The bird presents some lovely things that visit my way in life.
Over the years, the illustrations have changed. My recent favorite is "an erupting volcano", under which I write the words "explode!". Needless to say, I write my name, too.
From time to time, I try to draw a different illustration for every book brought before me. That is when my brain is put to the most difficult labor. I can feel the circuits within me pressed hard against the wall.
Book signings are like ascetic trainings.