I saw this is idea and fell in love with it. I think it could look really cool.
Instead of guests blowing bubbles or throwing rice(which I don't think anyone does anymore), you have them throw pom poms. I picked up two skeins of yarn yesterday and started making some pom poms. I have also enlisted mama to help me work on them. The yarn I got is ivory and aubergine, but I think it looks a little more maroon than I thought it did in the store. 14 down, a couple hundred to go. :)