Cute little cuff.
Take 1 toilet paper roll that has no paper on it.
Cut it in half. Now cut down the length of the tube.
Now here is the most important part. Slide them inside each other but big enough that your wrist can fit in it. Tape it shut.
Ok now choose your color of yarn and wrap it all the way around the cuff. Then tape the end so it doesn't get undone.
Now add what ever decorations you want. I added buttons cause I thought they would be cute (If you do buttons or something that doesnt already have sticky stuff (that sounded so smart) you might need elmers glue of hot glue I used hot glue).
Feel free to add your version. If you are confused ask me in the comments! THX :D