Oftentimes, a cardboard box of baking soda in the refrigerator just doesn’t seem to be doing enough to eliminate smells. Cue in this neat little guy. The Kuro Cube is a combination of oak and organically produced powdered white charcoal, both crafted in Korea. It efficiently gets rid of pesky odors that linger in your fridge, but can also be used as a purifier for other closed-off spaces, such as closets and drawers. And it gets better—Kuro can be used as a fertilizer once its first life is through.