Timbuk2 wants to help you celebrate Earth Day by providing a 20% savings on some of their more eco-friendly bags like the ones shown above, which are made from 100% recycled plastic bottles. If none of those bags strike your fancy, customize one with your own specifications and choose from 2 eco-friendly materials at no extra cost. Wait, there’s more. Trade in your old bag throughout April and receive 30% off a new bag. Timbuk2 sends your old bags to At the Crossroads, a San Fran based non-profit organisation, who supports the homeless and at risk youth.