Covering your bowls with items other than plastic wrap or aluminum foil is a great way to cut down on waste. Pictured here is a beeswax wrap, a dish towel, and a plate. They all work to cover what is in the bowls but some work better for different purposes. If it will be sitting on the counter for a short amount of time, dish towels and beeswax wraps work great. If it will be taking up prime real estate in the refrigerator, a plate is nice since you can stack other items on top of it.