Back of the envelope:- a phrase meaning to calculate and work things out. It is inferred that our light bulb moments come from rough doodles on a throw away scrap of paper, when doodling on a piece of paper of no value your mind is free to do your best work.
Doodles on envelopes is to repurpose paper that has touched our lives but has then been discarded and forgotten, but not always entirely some stored beneath floorboards, in disorderly piles on shelves and crammed into the back of cabinets, by strange people like me who can’t throw things away.
Attaching importance to inanimate objects is something that all human beings do, the question is what are the important ‘things’ it is inevitable that things become throwaway eventually. With a thrifty temperament and collector’s disposition it’s natural to amass great piles of envelopes and begin a journey to scribble, squiggle and sketch onto an old envelope.