Need: roll of paper towels, plastic food storage container with lid the depth of towels, water and vinegar or any cleaning liquid.
Cut a roll of paper towels in half. Fill about a quarter of container with solution of water and vinegar or cleaning liquid. Put towels into the container to absorb liquid. If not quite wet enough add a bit more liquid. Cut round hole in center of lid to pull towel through. If towels get dried out before all used, just add more liquid.