Think of how many paper cups end up in the trash each day. How about those plastic lids and brown cardboard sleeves? All of a sudden, that morning coffee seems pretty wasteful. Whether you're stopping in for your morning fix or an emergency afternoon jolt, bring your own mug to get your coffee or tea. Coffee shops will fill a coffee cup or travel mug in lieu of paper cups. By reducing waste, you can contribute to a more sustainable planet. And as an added bonus, some places even offer you a discount when you use your own mug.