Each ball ornament kit comes with everything you need to create a needle-felted ball ornament after your own design. I recommend a garden-inspired design, flowers are a lot of fun to get started with.
Included in the kit are a felted ball, various colors of wool batting, felting needles in fine, medium, and coarse, and a basic instruction card.
Create your own design, but make sure you read the basics of needle-felting in the tutorial included in the kit.