Pom-Pom Decor

I picked up a copy of the Marie Claire Idees magazine while in France (one of my favs) and wish I would have thumbed through it earlier. This idea they share of making pom-poms to put on a wreath, a package, or make a holiday chain out of them, is such a great one. Anyone made them before? Are they time consuming, or tricky?

(images scanned in from Marie Claire Idees)