Braille art is like ASCII art for the visually impaired/ legally blind. My Grandmother was legally blind, never learned Braille. But, she would have enjoyed art she could figure out by touching rather than trying to find an angle where she could see something of it.
This would make the job of the calendar itself much easier but, how useful is it? Maybe it doesn’t matter these days with most people having mobile phones. I do think this is the style I could work with to create an ASCII art calendar for each month. It’s an idea I’ve had on the back burner for awhile. Source: Calendar 2012 on Behance