My own answer, and not meant to be a cop-out, is anything. One of the things I really enjoy is to watch someone who does something well, whether it’s walk a tightrope, knead bread, or sling a garbage can. I’ve had the fun of seeing someone create giant soap bubbles, I mean giant, bigger than a car tire or a sofa cushion. The smooth, confident, practiced movements of someone who knows his or her craft are a thing of beauty. Invariably they make it look easy, but of course it’s not.
Right now I’m taking art classes, and I love watching someone’s painting develop from a sketch into something with dimension, character, and mood. I’m not a skilled artist, but some in my class are.
It’s also fascinating, almost hypnotically so, to watch a machine that produces things. I’ve seen tiny metal parts being stamped, and I’ve watched enormous rolls of paper turn into newspapers. I used to love watching the pulling of salt-water taffy by a turning device in the window of a shop on Nantasket Beach. I’ve seen 19th-century machinery operated to demonstrate how rifle parts were made during the Civil War. I watch the hair stylists in the salon work on clients ahead of me. The process of transformation is exciting, and at the same time the rhythmic repetition can be mesmerizing, calming.
It occurs to me that there’s a therapeutic potential here, possibly unexplored. But that’s another topic.