In fact, I've been using hanging clips for a long time, which I order in large quantities from https://arthangingsystems.com.au/products/picture-hanging-systems/hanging-wires-hooks/ . I do exhibitions and such things are simply irreplaceable for my work. It is very important to immediately take high-quality ones with a ball head so that the mount is strong and looks neat. It is convenient on this site that you can choose cables (there are transparent perlon, steel or white). I hung both large canvases and small photos, and in both cases, the result was excellent.