A week or two ago, we mentioned a site that shows you how to go green by designing your own cardboard chair. But if you’re a serious designer with a competitive streak, the One Good Chair competition offers $4500 for an innovative, eco-friendly “lounge chair or similar casual seating.” Registration costs $50 due on May 16, 2008, although late registration stretches until May 30 for an extra $25. Once you register, you have until 7 PM EST on June 9, 2008 to submit your contest materials.

So when can you expect to hear back? The winner(s) get notified sometime in mid July 2008 with full recognition coming at the awards ceremony in Las Vegas on July 30. So read the rules, register, and get to work. The future of eco-friendly design depends on you.