4. Use a Reusable Beverage Containers
Instead of buying individually-packaged drinks, consider buying a bulk container of the beverage you want and buying a reusable water bottle. Not only will this help the environment, but it will also help you save money since you are buying a bulk container.
Many campuses offer water fountains designed for drinking as well as for refilling reusable water bottles. Make use of these fountains throughout the day when you finish off the initial beverage.
Along these lines, many restaurants offer reusable containers for drinks. If you go to a certain place a lot, consider buying one of these containers to help minimize waste.
A lot of coffee shops even offer a discount to customers who use a reusable container for their drinks. Starbucks, as an example, offers a small discount for customers who do this. Saving the environment and money? Win-win.