Make your own PomPoms! create 2 donut shaped pieces of cardboard with a hole in the middle. Hold the yarn and start wrapping it around the ring until the cardboard is all covered. Next cut the yarn around the edges. Pass a length of yarn through the hole and tie it firmly together. http://www.kid-craft-central.com/pom-poms.html
Pom-pom yarn glossary, tips, tricks, and a how-to video
DIY Tulle pom pom balls - I do this for Christmas gifts in lieu of a bow... but I do it by hand and there's a shit ton of trimming required to make it cute and round and then the house is covered with bits of red tulle for the next 8 months... the cardboard circles might help.... iiiiinnnnteresting.
Make your own Pom Poms (Tutorial)