If you do just one thing, give up disposable plastic straws. Not only are they unnecessary, they are an environmental menace. According to the website choosetobestrawfree.com, over 500 million plastic straws are produced every single day, with a large majority of them ending up in landfills and oceans. Every year, over 1 million seabirds and 100,000 marine mammals ingest the plastic. At restaurants, refuse straws, opt out of disposable silverware and invest in reusable cups with built-in straws for your iced coffee drinks.