The shed, in essence, or at least in the dictionary, is ‘a structure, often open-fronted, for storing or shelter.’ However, the word is also a variant of ‘shade’, derived from the old Anglo-Saxon scead, making it a quiet place away from the hustle and bustle of life, a sort of hermitage. Many a shed-owner would relate to that, removing themselves to the bottom of the garden for an hour or two of ‘pottering’, that essential shed-based activity. There are those that potter on a higher plane, though; some of the world’s greatest minds have done their finest pondering in the humblest of lodges: Mark Twain had his octagonal gazebo, in which he wrote major portions of The Adventures of Tom Sawyer, The Adventures of Huckleberry Finn and more; fellow American…