One way to pass the time when you’re at home is, of course, watching television. I like the police procedural dramas, such as “Midsomer” (those poor people who live in that crime-ridden county), “Endeavour,” “Lewis,” and others. In many of these shows, the police headquarters has a crime board for each case. This is usually a large corkboard, blackboard, or whiteboard and is used to keep track of the details of each case, such as photos of the crime scene, suspects’ photos and notes, newspaper clippings...