Repurpose the classic Mason jar as a soap or lotion dispenser in your bathroom. Step 1: First, measure and mark the center of the jar's lid. Step 2: Using a 1/2" high-speed steel drill bit (about $10; local hardware store), drill a hole to fit the width of a soap dispenser pump. We used pumps from old lotion bottles. Step 3: Fill the jar with liquid soap, screw the lid back on, and insert the pump. You may need to trim the bottom of the pump to fit your jar.