One ball of Red Heart's popular but discontinued Pomp A Doodle pom pom yarn in black "Jet." This is like Spark-A-Doodle yarn (also discontinued) except Spark-A-Doodle has little metallic sparkles in it and this has more of a matte look to it.
I did the math: With 54 yards of yarn in each package, and each pom pom about 3 inches apart (4 pom poms per foot), that makes 648 pom poms on each skein of yarn. The pom poms are about 3/4 inch in diameter. There is just enough yarn in between to do a single crochet, then a pom pom, then another single crochet, then another pom pom. There is a knitting pattern on each skein for a scarf. It's Red Heart pattern LW2215. You can google it now to see if it's something you would like to try.
lease send me any questions you may have, and thanks for looking!