Virtually Advent

One effect of our newly empty nest is the absence, for the first time in over twenty years, of an advent calendar (or two, or three), an omission I sought rectify, but being less than impressed with the overpriced gaudy cardboard boxes of indifferent chocolates I decided to make my own; lack of physical skill and materials led me to the notion of a virtual version, which I promptly fashioned within an Excel spreadsheet (there is little I cannot achieve with an excel spreadsheet) which daily reveals clues to the (real) location of a (real, good quality) chocolate.