One of the biggest culprits of carbon emissions during the holiday season is all of the long car rides to get to Grandma's house. If you must drive, consider finding someone to carpool with who is heading in the same direction, to cut your emissions in half. Carpoolworld.com lets you register where you're going and helps you find others who are going the same route. While the eco-savings are huge, you also split the costs of fuel and tolls. The website has calculated they've taken over 173,000 cars off the road and saved 99 million gallons of gas.

Sick houseplant? Make it a healthy cocktail. Try pouring a little carbonated water instead of regular tap water when watering unhealthy plants. The reason? The bubbly water has something called macronutrients, which include carbon, oxygen, hydrogen, phosphorous, potassium, sulfur and sodium. These are all nutrients that plants need, and when done through water, they absorb it quickly and can heal themselves -- and also grow at a faster rate. Even if you just have a little leftover club soda, give it to your plants, and say "cheers!"

Do you have a collection of beloved T-shirts you just can't bear to part with? Or maybe that your kids have outgrown? Yes, you can donate them to charity. But you can also have them upcycled into a cozy blanket. For people who don't like to sew, Project Repat takes your shirts and cuts them into squares, which are then sewn into a quilt, all lined with a 100 percent recycled fleece backing. It's as simple as boxing it up, sending it away and waiting a few days to get your brand-new quilt. Learn more at projectrepat.com.