We purchase many of our seed and bugle beads online from Fire Mountain Gems as they provide a selection of colors and sizes: http://www.firemountaingems.com/
In New York City, a company called Trims de Carnival also offers a wide selection of beads, sequins and other trims. I normally stop in to see what is new on all of my trips to New York:
Tinsel Trading Company is one of my favorite shops for trims in the world:
And, Mokuba offers the most beautiful trims in the world and has several areas of distribution. The New York Store is worth the trip. We purchase our fold-over elastic trim for our skirts from Mokuba. It is a great product that comes in lots of colors.
To make it easier for you to shop all of these products in one place, we now offer all of our special trims and notions from our online store.