Micro-Mesh is a series of ultra-fine grits sanders that when used in sequence produce a high polish on all sorts of materials. They come in a variety of sizes and shapes. I found my first set in a workshop trash can. Someone had thrown them away after finishing a pen-turning projects. Lucky for me because they had plenty of life left in them. #affiliatelink
What sanding/polishing system do you like? Leave a link in the comments.