MIAMI — One of the good things about the glut of art at fairs is the chance to make unexpected visual connections — to watch sparks fly between artworks you’d never otherwise see together. (If you can keep your brain focused, which I grant is a big “if.”) At the sprawling Art Miami fair, I was pleasantly surprised by some of the associations and affinities that jumped out at me from among the aisles. Here, in no particular order, are some of them.