My grandma always used to put moka pot coffee grounds in the fridge or in the shoe closet because coffee grounds are excellent for absorbing bad smells. In her memory, I thought about designing a box that could hold about a week's worth of coffee grounds and still fit in a small fridge like mine. Old remedies are often excellent and cost nothing.

Simply unscrew your moka pot and tap the side rod with the filter to let the coffee grounds fall into the box. The rod can also be removed for washing.