Honestly probably not that hard, could train a model/lora with about 30 images, so gather more than 30 good looking icons, train a model and then take the time

Honestly probably not that hard, could train a model/lora with about 30 images, so gather more than 30 good looking icons, train a model and then take the time to prompt and generate all the icons you need. Then do touchups in gimp/photoshop. At most would take me a week or so to do I think, more likely less than a day.