Swap To-Go Coffee Cups For a Reusable To-Go Coffee Cup To-go coffee cups and cups you get at the coffee shop are so bad for the environment. Instead, bring your own cup with you like this Glass Tumbler ($16). Most coffee shops are happy to fill it up for you, and it looks nice and sleek while you're on the go. Image Source: amazon.com Glass Tumbler $16 from amazon.com Buy Now