I had the idea to do a needle felted coffee cup sleeve some time ago, and I finally sat down and did one this evening. It turned out better than I expected. There is so much room for creativity in the design, and colors you can do. Just like the bookmarks you can make it your own. I have done a full length PDF tutorial that will be available over on print-a-craft sometime in the near future.
This tutorial is now available in my Etsy shop.