Exercise and memo books, writing sets and endless rubbers, coloured pens and propelling pencils, Post-it Notes and fountain pens, highlighters in different hues, markers – great, galumphing things – and tiny fibre-tips, envelopes all shapes and sizes, notebooks stapled (spiral-bound or sewn-spined) – I own and love them all. I am not alone, of course. John Lewis saw a 177% rise last year in its sa