If you can't facilitate a recessed knock box, the EDO stainless steel knock box is the perfect tabletop solution. Simply place the knock box wherever you want to use it. EDO have added rubber strips to the base of the unit, so you don't need to worry about damaging you countertop or making adjustments to your kitchen. With the addition to the rubber surround you can use this knock box with minimal noise or vibration. If you're concerned about build quality, rest assured that the stainless steel is hefty and was designed to for a lot of use.