Stuff I love: Muji Chronotebook September 29, 2008 Start with the simplest thing imaginable: a blank sheet of paper. Add a rows of lines and it becomes a notebook. Add a grid instead and it becomes an drawing pad for architects. Add a few tiny boxes and it turns into a to-do list. Put in dates and you’ve got a calendar. But as they teach you in your high-school econ class, everything has a cost. F