I keep thinking of making my own set of icons that are composable. I see a lot of sets where there are individual icons for “folder”, “folder with +”, “folder with -”, “folder with gear”, and so on, sometimes both with the added in internal space or an overlay to the bottom right, with each being separately designed. It strikes me that defining folder, +, -, <gar>, … then being able to ask for folder-with-gear-inside or <anything>-with-small-<anything>-overlaying-bottom-right. You wouldn't want it all don dynamically of course, so some heavy caching or compiling to a sprite-set would be needed for efficiency.

But I do wonder if LLM can create SVG icons if we give it some good samples