I used the same simple ball crochet pattern to create these cats. I used black red heart super saver yarn to crochet and stuff the cats. I added 2 triangles that I crocheted for ears. You could use felt if you'd like instead though. I then used felt and/or buttons for the eyes and finished it off by stitching on the mouth using embroidery floss that matched the eyes.
Here are my cats. They are a little fuzzy but I had already put them in storage before I realized my pictures weren't very good.