
You can make a good, old fashioned donation to The Nature Conservancy to help support their conservation projects all around the world. Or, you can shop the Nature Conservancy Marketplace and pick a specific conservation project to support in your name or on behalf of someone else. Protect sea turtles for $25 (and get a cute stuffed turtle as a special gift) or adopt an acre in Costa Rica for $50 (sadly, this one does not come with a free trip to Costa Rica). You can also shop the Marketplace for clothing, jewelry, ornaments, water bottles, books, DVDs, etc. and 10% of sales will go toward the Nature Conservancy. Not sure whether your mother-in-law would appreciate a donation to rhinos on her behalf? Get her a gift certificate to The Nature Conservancy Marketplace instead and let her choose for herself!
You can also join The Nature Conservancy's Plant a Billion Trees campaign. The Conservancy is working with local partners to bring the Atlantic Forest of Brazil - one of the world's biggest and most endangered tropical forests - back by reforesting 1 million acres of land. They are close to their goal of planting 1 billion trees by 2015 (they're at 9,953,810 trees right now!). One dollar plants one tree. You can also give a gift of trees by planting trees on someone's behalf.