Many of us are trying to cut back on plastic by looking for substitutes for plastic wrap to cover food that is stored in the fridge. If you have a look in your local op shop or antique shop, you'll probably find china lids that used to sit on top of old serving pots. Usually, you can buy them for a couple of dollars. They make excellent covers for modern bowls and can be used over and over again. Or just look in your saucepan cupboard. You might find a saucepan lid just the right size for your bowl of leftover potato salad or fresh strawberries. If the seal isn't quite right, cover the top of the bowl with a square of moist cloth or a piece of baking paper and then place the lid on it. Most food will store well in the fridge for a couple of days using this method.