Coffee Bags Put in Garbage Cart Ways to Reduce Buy Coffee in Bulk Instead of buying single bags of coffee, buy coffee beans from the bulk section of your supermarket. Bring an empty coffee bag or jar into the store for your coffee instead of usingĀ a brand new container every time. Ways to Reuse Upcycle Your Coffee Bag You can turn a plastic coffee bag into a planter or vase, or you can turn several into a reusable tote bag.