I love trades. Especially if the trade is something i can use to make jewelry with.
I found this group called the Trade-A-Holics. I havent traded anything yet but they seem like a great group. They are an Etsy team but u can follow their blog even if u arent a member....... Trade A Holics .
"The Etsy Trade-a-holic Team’s purpose is to trade amongst it’s members and other interested shops. Thru trading, we self & cross promote, receive feedback and build our sales plus gain wanted or needed items. We also strive to maintain an organized and updated list of people willing to barter for what they want & need."