Speaking of parties, I just discovered another amazing Etsy resource: Party Poms. This store sells countless "Party Poms" a bright flowery puff ball of tissue paper. Sold in different colors, numbers and sizes you are pretty much guaranteed to find a combination that fits your celebration. They even come with monofilament (clear fishing wire-like stuff) to hang them up right away.
Check out the rainbow goodness here.
(Thanks to Party Perfect for the heads up.)