You’ll be surprised at the things your unused brew can do—from the last cold quarter-inch abandoned in your mug to the wet grounds still sitting in the filter. We’ve even found a way to do something creative with the java spilled on your stove! (No, really.) This caffeine-fueled list of household hacks, gardening tips, foodie treats, and even coffee art ideas will guarantee you’ll never again waste a drop of your cup ‘o joe.